CVE-2026-8973
Memory safety bugs fixed in Thunderbird 151
CVE-2026-8973 is fixed in 438 products on 2 platforms, first by Firefox Developer Edition (ach) 151.0, released May 13, 2026. It is not reported as exploited. Patch Radar priority: High.
HighFixed on 2 platforms
CVSS
8.8
No vendor severity
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0037
30th percentile
Memory safety bugs present in Thunderbird 150. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 151 and Thunderbird 151.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Firefox Developer Edition (ach) | 151.0 | Firefox Developer Edition (ach) 151.0 | May 13, 2026 |
| Firefox Developer Edition (af) | 151.0 | Firefox Developer Edition (af) 151.0 | May 13, 2026 |
| Firefox Developer Edition (an) | 151.0 | Firefox Developer Edition (an) 151.0 | May 13, 2026 |
| Firefox Developer Edition (ar) | 151.0 | Firefox Developer Edition (ar) 151.0 | May 13, 2026 |
| Firefox Developer Edition (ast) | 151.0 | Firefox Developer Edition (ast) 151.0 | May 13, 2026 |
| Firefox Developer Edition (az) | 151.0 | Firefox Developer Edition (az) 151.0 | May 13, 2026 |
| Firefox Developer Edition (be) | 151.0 | Firefox Developer Edition (be) 151.0 | May 13, 2026 |
| Firefox Developer Edition (bg) | 151.0 | Firefox Developer Edition (bg) 151.0 | May 13, 2026 |
| Firefox Developer Edition (bn) | 151.0 | Firefox Developer Edition (bn) 151.0 | May 13, 2026 |
| Firefox Developer Edition (br) | 151.0 | Firefox Developer Edition (br) 151.0 | May 13, 2026 |
| Firefox Developer Edition (bs) | 151.0 | Firefox Developer Edition (bs) 151.0 | May 13, 2026 |
| Firefox Developer Edition (ca) | 151.0 | Firefox Developer Edition (ca) 151.0 | May 13, 2026 |
| Firefox Developer Edition (ca-valencia) | 151.0 | Firefox Developer Edition (ca-valencia) 151.0 | May 13, 2026 |
| Firefox Developer Edition (cak) | 151.0 | Firefox Developer Edition (cak) 151.0 | May 13, 2026 |
| Firefox Developer Edition (cs) | 151.0 | Firefox Developer Edition (cs) 151.0 | May 13, 2026 |
| Firefox Developer Edition (cy) | 151.0 | Firefox Developer Edition (cy) 151.0 | May 13, 2026 |
| Firefox Developer Edition (da) | 151.0 | Firefox Developer Edition (da) 151.0 | May 13, 2026 |
| Firefox Developer Edition (de) | 151.0 | Firefox Developer Edition (de) 151.0 | May 13, 2026 |
| Firefox Developer Edition (dsb) | 151.0 | Firefox Developer Edition (dsb) 151.0 | May 13, 2026 |
| Firefox Developer Edition (el) | 151.0 | Firefox Developer Edition (el) 151.0 | May 13, 2026 |
| Firefox Developer Edition (en-CA) | 151.0 | Firefox Developer Edition (en-CA) 151.0 | May 13, 2026 |
| Firefox Developer Edition (en-GB) | 151.0 | Firefox Developer Edition (en-GB) 151.0 | May 13, 2026 |
| Firefox Developer Edition (en-US) | 151.0 | Firefox Developer Edition (en-US) 151.0 | May 13, 2026 |
| Firefox Developer Edition (eo) | 151.0 | Firefox Developer Edition (eo) 151.0 | May 13, 2026 |
| Firefox Developer Edition (es-AR) | 151.0 | Firefox Developer Edition (es-AR) 151.0 | May 13, 2026 |
| Firefox Developer Edition (es-CL) | 151.0 | Firefox Developer Edition (es-CL) 151.0 | May 13, 2026 |
| Firefox Developer Edition (es-ES) | 151.0 | Firefox Developer Edition (es-ES) 151.0 | May 13, 2026 |
| Firefox Developer Edition (es-MX) | 151.0 | Firefox Developer Edition (es-MX) 151.0 | May 13, 2026 |
| Firefox Developer Edition (et) | 151.0 | Firefox Developer Edition (et) 151.0 | May 13, 2026 |
| Firefox Developer Edition (eu) | 151.0 | Firefox Developer Edition (eu) 151.0 | May 13, 2026 |
| Firefox Developer Edition (fa) | 151.0 | Firefox Developer Edition (fa) 151.0 | May 13, 2026 |
| Firefox Developer Edition (ff) | 151.0 | Firefox Developer Edition (ff) 151.0 | May 13, 2026 |
| Firefox Developer Edition (fi) | 151.0 | Firefox Developer Edition (fi) 151.0 | May 13, 2026 |
| Firefox Developer Edition (fr) | 151.0 | Firefox Developer Edition (fr) 151.0 | May 13, 2026 |
| Firefox Developer Edition (fur) | 151.0 | Firefox Developer Edition (fur) 151.0 | May 13, 2026 |
| Firefox Developer Edition (fy-NL) | 151.0 | Firefox Developer Edition (fy-NL) 151.0 | May 13, 2026 |
| Firefox Developer Edition (ga-IE) | 151.0 | Firefox Developer Edition (ga-IE) 151.0 | May 13, 2026 |
| Firefox Developer Edition (gd) | 151.0 | Firefox Developer Edition (gd) 151.0 | May 13, 2026 |
| Firefox Developer Edition (gl) | 151.0 | Firefox Developer Edition (gl) 151.0 | May 13, 2026 |
| Firefox Developer Edition (gn) | 151.0 | Firefox Developer Edition (gn) 151.0 | May 13, 2026 |
| Firefox Developer Edition (gu-IN) | 151.0 | Firefox Developer Edition (gu-IN) 151.0 | May 13, 2026 |
| Firefox Developer Edition (he) | 151.0 | Firefox Developer Edition (he) 151.0 | May 13, 2026 |
| Firefox Developer Edition (hi-IN) | 151.0 | Firefox Developer Edition (hi-IN) 151.0 | May 13, 2026 |
| Firefox Developer Edition (hr) | 151.0 | Firefox Developer Edition (hr) 151.0 | May 13, 2026 |
| Firefox Developer Edition (hsb) | 151.0 | Firefox Developer Edition (hsb) 151.0 | May 13, 2026 |
| Firefox Developer Edition (hu) | 151.0 | Firefox Developer Edition (hu) 151.0 | May 13, 2026 |
| Firefox Developer Edition (hy-AM) | 151.0 | Firefox Developer Edition (hy-AM) 151.0 | May 13, 2026 |
| Firefox Developer Edition (ia) | 151.0 | Firefox Developer Edition (ia) 151.0 | May 13, 2026 |
| Firefox Developer Edition (id) | 151.0 | Firefox Developer Edition (id) 151.0 | May 13, 2026 |
| Firefox Developer Edition (is) | 151.0 | Firefox Developer Edition (is) 151.0 | May 13, 2026 |
| Firefox Developer Edition (it) | 151.0 | Firefox Developer Edition (it) 151.0 | May 13, 2026 |
| Firefox Developer Edition (ja) | 151.0 | Firefox Developer Edition (ja) 151.0 | May 13, 2026 |
| Firefox Developer Edition (ka) | 151.0 | Firefox Developer Edition (ka) 151.0 | May 13, 2026 |
| Firefox Developer Edition (kab) | 151.0 | Firefox Developer Edition (kab) 151.0 | May 13, 2026 |
| Firefox Developer Edition (kk) | 151.0 | Firefox Developer Edition (kk) 151.0 | May 13, 2026 |
| Firefox Developer Edition (km) | 151.0 | Firefox Developer Edition (km) 151.0 | May 13, 2026 |
| Firefox Developer Edition (kn) | 151.0 | Firefox Developer Edition (kn) 151.0 | May 13, 2026 |
| Firefox Developer Edition (ko) | 151.0 | Firefox Developer Edition (ko) 151.0 | May 13, 2026 |
| Firefox Developer Edition (lij) | 151.0 | Firefox Developer Edition (lij) 151.0 | May 13, 2026 |
| Firefox Developer Edition (lt) | 151.0 | Firefox Developer Edition (lt) 151.0 | May 13, 2026 |
| Firefox Developer Edition (lv) | 151.0 | Firefox Developer Edition (lv) 151.0 | May 13, 2026 |
| Firefox Developer Edition (mk) | 151.0 | Firefox Developer Edition (mk) 151.0 | May 13, 2026 |
| Firefox Developer Edition (mr) | 151.0 | Firefox Developer Edition (mr) 151.0 | May 13, 2026 |
| Firefox Developer Edition (ms) | 151.0 | Firefox Developer Edition (ms) 151.0 | May 13, 2026 |
| Firefox Developer Edition (my) | 151.0 | Firefox Developer Edition (my) 151.0 | May 13, 2026 |
| Firefox Developer Edition (nb-NO) | 151.0 | Firefox Developer Edition (nb-NO) 151.0 | May 13, 2026 |
| Firefox Developer Edition (ne-NP) | 151.0 | Firefox Developer Edition (ne-NP) 151.0 | May 13, 2026 |
| Firefox Developer Edition (nl) | 151.0 | Firefox Developer Edition (nl) 151.0 | May 13, 2026 |
| Firefox Developer Edition (nn-NO) | 151.0 | Firefox Developer Edition (nn-NO) 151.0 | May 13, 2026 |
| Firefox Developer Edition (oc) | 151.0 | Firefox Developer Edition (oc) 151.0 | May 13, 2026 |
| Firefox Developer Edition (pa-IN) | 151.0 | Firefox Developer Edition (pa-IN) 151.0 | May 13, 2026 |
| Firefox Developer Edition (pl) | 151.0 | Firefox Developer Edition (pl) 151.0 | May 13, 2026 |
| Firefox Developer Edition (pt-BR) | 151.0 | Firefox Developer Edition (pt-BR) 151.0 | May 13, 2026 |
| Firefox Developer Edition (pt-PT) | 151.0 | Firefox Developer Edition (pt-PT) 151.0 | May 13, 2026 |
| Firefox Developer Edition (rm) | 151.0 | Firefox Developer Edition (rm) 151.0 | May 13, 2026 |
| Firefox Developer Edition (ro) | 151.0 | Firefox Developer Edition (ro) 151.0 | May 13, 2026 |
| Firefox Developer Edition (ru) | 151.0 | Firefox Developer Edition (ru) 151.0 | May 13, 2026 |
| Firefox Developer Edition (sc) | 151.0 | Firefox Developer Edition (sc) 151.0 | May 13, 2026 |
| Firefox Developer Edition (sco) | 151.0 | Firefox Developer Edition (sco) 151.0 | May 13, 2026 |
| Firefox Developer Edition (si) | 151.0 | Firefox Developer Edition (si) 151.0 | May 13, 2026 |
| Firefox Developer Edition (sk) | 151.0 | Firefox Developer Edition (sk) 151.0 | May 13, 2026 |
| Firefox Developer Edition (sl) | 151.0 | Firefox Developer Edition (sl) 151.0 | May 13, 2026 |
| Firefox Developer Edition (son) | 151.0 | Firefox Developer Edition (son) 151.0 | May 13, 2026 |
| Firefox Developer Edition (sq) | 151.0 | Firefox Developer Edition (sq) 151.0 | May 13, 2026 |
| Firefox Developer Edition (sr) | 151.0 | Firefox Developer Edition (sr) 151.0 | May 13, 2026 |
| Firefox Developer Edition (sv-SE) | 151.0 | Firefox Developer Edition (sv-SE) 151.0 | May 13, 2026 |
| Firefox Developer Edition (szl) | 151.0 | Firefox Developer Edition (szl) 151.0 | May 13, 2026 |
| Firefox Developer Edition (ta) | 151.0 | Firefox Developer Edition (ta) 151.0 | May 13, 2026 |
| Firefox Developer Edition (te) | 151.0 | Firefox Developer Edition (te) 151.0 | May 13, 2026 |
| Firefox Developer Edition (tg) | 151.0 | Firefox Developer Edition (tg) 151.0 | May 13, 2026 |
| Firefox Developer Edition (th) | 151.0 | Firefox Developer Edition (th) 151.0 | May 13, 2026 |
| Firefox Developer Edition (tl) | 151.0 | Firefox Developer Edition (tl) 151.0 | May 13, 2026 |
| Firefox Developer Edition (tr) | 151.0 | Firefox Developer Edition (tr) 151.0 | May 13, 2026 |
| Firefox Developer Edition (trs) | 151.0 | Firefox Developer Edition (trs) 151.0 | May 13, 2026 |
| Firefox Developer Edition (uk) | 151.0 | Firefox Developer Edition (uk) 151.0 | May 13, 2026 |
| Firefox Developer Edition (ur) | 151.0 | Firefox Developer Edition (ur) 151.0 | May 13, 2026 |
| Firefox Developer Edition (uz) | 151.0 | Firefox Developer Edition (uz) 151.0 | May 13, 2026 |
| Firefox Developer Edition (vi) | 151.0 | Firefox Developer Edition (vi) 151.0 | May 13, 2026 |
| Firefox Developer Edition (xh) | 151.0 | Firefox Developer Edition (xh) 151.0 | May 13, 2026 |
| Firefox Developer Edition (zh-CN) | 151.0 | Firefox Developer Edition (zh-CN) 151.0 | May 13, 2026 |
| Firefox Developer Edition (zh-TW) | 151.0 | Firefox Developer Edition (zh-TW) 151.0 | May 13, 2026 |
| Mozilla Firefox (ach) | 151.0 | Mozilla Firefox (ach) 151.0 | May 19, 2026 |
| Mozilla Firefox (af) | 151.0 | Mozilla Firefox (af) 151.0 | May 19, 2026 |
| Mozilla Firefox (an) | 151.0 | Mozilla Firefox (an) 151.0 | May 19, 2026 |
| Mozilla Firefox (ar) | 151.0 | Mozilla Firefox (ar) 151.0 | May 19, 2026 |
| Mozilla Firefox (ast) | 151.0 | Mozilla Firefox (ast) 151.0 | May 19, 2026 |
| Mozilla Firefox (az) | 151.0 | Mozilla Firefox (az) 151.0 | May 19, 2026 |
| Mozilla Firefox (be) | 151.0 | Mozilla Firefox (be) 151.0 | May 19, 2026 |
| Mozilla Firefox (bg) | 151.0 | Mozilla Firefox (bg) 151.0 | May 19, 2026 |
| Mozilla Firefox (bn) | 151.0 | Mozilla Firefox (bn) 151.0 | May 19, 2026 |
| Mozilla Firefox (br) | 151.0 | Mozilla Firefox (br) 151.0 | May 19, 2026 |
| Mozilla Firefox (bs) | 151.0 | Mozilla Firefox (bs) 151.0 | May 19, 2026 |
| Mozilla Firefox (ca) | 151.0 | Mozilla Firefox (ca) 151.0 | May 19, 2026 |
| Mozilla Firefox (ca-valencia) | 151.0 | Mozilla Firefox (ca-valencia) 151.0 | May 19, 2026 |
| Mozilla Firefox (cak) | 151.0 | Mozilla Firefox (cak) 151.0 | May 19, 2026 |
| Mozilla Firefox (cs) | 151.0 | Mozilla Firefox (cs) 151.0 | May 19, 2026 |
| Mozilla Firefox (cy) | 151.0 | Mozilla Firefox (cy) 151.0 | May 19, 2026 |
| Mozilla Firefox (da) | 151.0 | Mozilla Firefox (da) 151.0 | May 19, 2026 |
| Mozilla Firefox (de) | 151.0 | Mozilla Firefox (de) 151.0 | May 19, 2026 |
| Mozilla Firefox (dsb) | 151.0 | Mozilla Firefox (dsb) 151.0 | May 19, 2026 |
| Mozilla Firefox (el) | 151.0 | Mozilla Firefox (el) 151.0 | May 19, 2026 |
| Mozilla Firefox (en-CA) | 151.0 | Mozilla Firefox (en-CA) 151.0 | May 19, 2026 |
| Mozilla Firefox (en-GB) | 151.0 | Mozilla Firefox (en-GB) 151.0 | May 19, 2026 |
| Mozilla Firefox (en-US) | 151.0 | Mozilla Firefox (en-US) 151.0 | May 19, 2026 |
| Mozilla Firefox (eo) | 151.0 | Mozilla Firefox (eo) 151.0 | May 19, 2026 |
| Mozilla Firefox (es-AR) | 151.0 | Mozilla Firefox (es-AR) 151.0 | May 19, 2026 |
| Mozilla Firefox (es-CL) | 151.0 | Mozilla Firefox (es-CL) 151.0 | May 19, 2026 |
| Mozilla Firefox (es-ES) | 151.0 | Mozilla Firefox (es-ES) 151.0 | May 19, 2026 |
| Mozilla Firefox (es-MX) | 151.0 | Mozilla Firefox (es-MX) 151.0 | May 19, 2026 |
| Mozilla Firefox (et) | 151.0 | Mozilla Firefox (et) 151.0 | May 19, 2026 |
| Mozilla Firefox (eu) | 151.0 | Mozilla Firefox (eu) 151.0 | May 19, 2026 |
| Mozilla Firefox (fa) | 151.0 | Mozilla Firefox (fa) 151.0 | May 19, 2026 |
| Mozilla Firefox (ff) | 151.0 | Mozilla Firefox (ff) 151.0 | May 19, 2026 |
| Mozilla Firefox (fi) | 151.0 | Mozilla Firefox (fi) 151.0 | May 19, 2026 |
| Mozilla Firefox (fr) | 151.0 | Mozilla Firefox (fr) 151.0 | May 19, 2026 |
| Mozilla Firefox (fur) | 151.0 | Mozilla Firefox (fur) 151.0 | May 19, 2026 |
| Mozilla Firefox (fy-NL) | 151.0 | Mozilla Firefox (fy-NL) 151.0 | May 19, 2026 |
| Mozilla Firefox (ga-IE) | 151.0 | Mozilla Firefox (ga-IE) 151.0 | May 19, 2026 |
| Mozilla Firefox (gd) | 151.0 | Mozilla Firefox (gd) 151.0 | May 19, 2026 |
| Mozilla Firefox (gl) | 151.0 | Mozilla Firefox (gl) 151.0 | May 19, 2026 |
| Mozilla Firefox (gn) | 151.0 | Mozilla Firefox (gn) 151.0 | May 19, 2026 |
| Mozilla Firefox (gu-IN) | 151.0 | Mozilla Firefox (gu-IN) 151.0 | May 19, 2026 |
| Mozilla Firefox (he) | 151.0 | Mozilla Firefox (he) 151.0 | May 19, 2026 |
| Mozilla Firefox (hi-IN) | 151.0 | Mozilla Firefox (hi-IN) 151.0 | May 19, 2026 |
| Mozilla Firefox (hr) | 151.0 | Mozilla Firefox (hr) 151.0 | May 19, 2026 |
| Mozilla Firefox (hsb) | 151.0 | Mozilla Firefox (hsb) 151.0 | May 19, 2026 |
| Mozilla Firefox (hu) | 151.0 | Mozilla Firefox (hu) 151.0 | May 19, 2026 |
| Mozilla Firefox (hy-AM) | 151.0 | Mozilla Firefox (hy-AM) 151.0 | May 19, 2026 |
| Mozilla Firefox (ia) | 151.0 | Mozilla Firefox (ia) 151.0 | May 19, 2026 |
| Mozilla Firefox (id) | 151.0 | Mozilla Firefox (id) 151.0 | May 19, 2026 |
| Mozilla Firefox (is) | 151.0 | Mozilla Firefox (is) 151.0 | May 19, 2026 |
| Mozilla Firefox (it) | 151.0 | Mozilla Firefox (it) 151.0 | May 19, 2026 |
| Mozilla Firefox (ja) | 151.0 | Mozilla Firefox (ja) 151.0 | May 19, 2026 |
| Mozilla Firefox (ka) | 151.0 | Mozilla Firefox (ka) 151.0 | May 19, 2026 |
| Mozilla Firefox (kab) | 151.0 | Mozilla Firefox (kab) 151.0 | May 19, 2026 |
| Mozilla Firefox (kk) | 151.0 | Mozilla Firefox (kk) 151.0 | May 19, 2026 |
| Mozilla Firefox (km) | 151.0 | Mozilla Firefox (km) 151.0 | May 19, 2026 |
| Mozilla Firefox (kn) | 151.0 | Mozilla Firefox (kn) 151.0 | May 19, 2026 |
| Mozilla Firefox (ko) | 151.0 | Mozilla Firefox (ko) 151.0 | May 19, 2026 |
| Mozilla Firefox (lij) | 151.0 | Mozilla Firefox (lij) 151.0 | May 19, 2026 |
| Mozilla Firefox (lt) | 151.0 | Mozilla Firefox (lt) 151.0 | May 19, 2026 |
| Mozilla Firefox (lv) | 151.0 | Mozilla Firefox (lv) 151.0 | May 19, 2026 |
| Mozilla Firefox (mk) | 151.0 | Mozilla Firefox (mk) 151.0 | May 19, 2026 |
| Mozilla Firefox (mr) | 151.0 | Mozilla Firefox (mr) 151.0 | May 19, 2026 |
| Mozilla Firefox (ms) | 151.0 | Mozilla Firefox (ms) 151.0 | May 19, 2026 |
| Mozilla Firefox (my) | 151.0 | Mozilla Firefox (my) 151.0 | May 19, 2026 |
| Mozilla Firefox (nb-NO) | 151.0 | Mozilla Firefox (nb-NO) 151.0 | May 19, 2026 |
| Mozilla Firefox (ne-NP) | 151.0 | Mozilla Firefox (ne-NP) 151.0 | May 19, 2026 |
| Mozilla Firefox (nl) | 151.0 | Mozilla Firefox (nl) 151.0 | May 19, 2026 |
| Mozilla Firefox (nn-NO) | 151.0 | Mozilla Firefox (nn-NO) 151.0 | May 19, 2026 |
| Mozilla Firefox (oc) | 151.0 | Mozilla Firefox (oc) 151.0 | May 19, 2026 |
| Mozilla Firefox (pa-IN) | 151.0 | Mozilla Firefox (pa-IN) 151.0 | May 19, 2026 |
| Mozilla Firefox (pl) | 151.0 | Mozilla Firefox (pl) 151.0 | May 19, 2026 |
| Mozilla Firefox (pt-BR) | 151.0 | Mozilla Firefox (pt-BR) 151.0 | May 19, 2026 |
| Mozilla Firefox (pt-PT) | 151.0 | Mozilla Firefox (pt-PT) 151.0 | May 19, 2026 |
| Mozilla Firefox (rm) | 151.0 | Mozilla Firefox (rm) 151.0 | May 19, 2026 |
| Mozilla Firefox (ro) | 151.0 | Mozilla Firefox (ro) 151.0 | May 19, 2026 |
| Mozilla Firefox (ru) | 151.0 | Mozilla Firefox (ru) 151.0 | May 19, 2026 |
| Mozilla Firefox (sc) | 151.0 | Mozilla Firefox (sc) 151.0 | May 19, 2026 |
| Mozilla Firefox (sco) | 151.0 | Mozilla Firefox (sco) 151.0 | May 19, 2026 |
| Mozilla Firefox (si) | 151.0 | Mozilla Firefox (si) 151.0 | May 19, 2026 |
| Mozilla Firefox (sk) | 151.0 | Mozilla Firefox (sk) 151.0 | May 19, 2026 |
| Mozilla Firefox (sl) | 151.0 | Mozilla Firefox (sl) 151.0 | May 19, 2026 |
| Mozilla Firefox (son) | 151.0 | Mozilla Firefox (son) 151.0 | May 19, 2026 |
| Mozilla Firefox (sq) | 151.0 | Mozilla Firefox (sq) 151.0 | May 19, 2026 |
| Mozilla Firefox (sr) | 151.0 | Mozilla Firefox (sr) 151.0 | May 19, 2026 |
| Mozilla Firefox (sv-SE) | 151.0 | Mozilla Firefox (sv-SE) 151.0 | May 19, 2026 |
| Mozilla Firefox (szl) | 151.0 | Mozilla Firefox (szl) 151.0 | May 19, 2026 |
| Mozilla Firefox (ta) | 151.0 | Mozilla Firefox (ta) 151.0 | May 19, 2026 |
| Mozilla Firefox (te) | 151.0 | Mozilla Firefox (te) 151.0 | May 19, 2026 |
| Mozilla Firefox (tg) | 151.0 | Mozilla Firefox (tg) 151.0 | May 19, 2026 |
| Mozilla Firefox (th) | 151.0 | Mozilla Firefox (th) 151.0 | May 19, 2026 |
| Mozilla Firefox (tl) | 151.0 | Mozilla Firefox (tl) 151.0 | May 19, 2026 |
| Mozilla Firefox (tr) | 151.0 | Mozilla Firefox (tr) 151.0 | May 19, 2026 |
| Mozilla Firefox (trs) | 151.0 | Mozilla Firefox (trs) 151.0 | May 19, 2026 |
| Mozilla Firefox (uk) | 151.0 | Mozilla Firefox (uk) 151.0 | May 19, 2026 |
| Mozilla Firefox (ur) | 151.0 | Mozilla Firefox (ur) 151.0 | May 19, 2026 |
| Mozilla Firefox (uz) | 151.0 | Mozilla Firefox (uz) 151.0 | May 19, 2026 |
| Mozilla Firefox (vi) | 151.0 | Mozilla Firefox (vi) 151.0 | May 19, 2026 |
| Mozilla Firefox (xh) | 151.0 | Mozilla Firefox (xh) 151.0 | May 19, 2026 |
| Mozilla Firefox (zh-CN) | 151.0 | Mozilla Firefox (zh-CN) 151.0 | May 19, 2026 |
| Mozilla Firefox (zh-TW) | 151.0 | Mozilla Firefox (zh-TW) 151.0 | May 19, 2026 |
| Mozilla Firefox ESR (ach) | 153.0.0 | Mozilla Firefox ESR (ach) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (af) | 153.0.0 | Mozilla Firefox ESR (af) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (an) | 153.0.0 | Mozilla Firefox ESR (an) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ar) | 153.0.0 | Mozilla Firefox ESR (ar) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ast) | 153.0.0 | Mozilla Firefox ESR (ast) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (az) | 153.0.0 | Mozilla Firefox ESR (az) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (be) | 153.0.0 | Mozilla Firefox ESR (be) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (bg) | 153.0.0 | Mozilla Firefox ESR (bg) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (bn) | 153.0.0 | Mozilla Firefox ESR (bn) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (br) | 153.0.0 | Mozilla Firefox ESR (br) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (bs) | 153.0.0 | Mozilla Firefox ESR (bs) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ca) | 153.0.0 | Mozilla Firefox ESR (ca) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ca-valencia) | 153.0.0 | Mozilla Firefox ESR (ca-valencia) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (cak) | 153.0.0 | Mozilla Firefox ESR (cak) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (cs) | 153.0.0 | Mozilla Firefox ESR (cs) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (cy) | 153.0.0 | Mozilla Firefox ESR (cy) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (da) | 153.0.0 | Mozilla Firefox ESR (da) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (de) | 153.0.0 | Mozilla Firefox ESR (de) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (dsb) | 153.0.0 | Mozilla Firefox ESR (dsb) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (el) | 153.0.0 | Mozilla Firefox ESR (el) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (en-CA) | 153.0.0 | Mozilla Firefox ESR (en-CA) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (en-GB) | 153.0.0 | Mozilla Firefox ESR (en-GB) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (en-US) | 153.0.0 | Mozilla Firefox ESR (en-US) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (eo) | 153.0.0 | Mozilla Firefox ESR (eo) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (es-AR) | 153.0.0 | Mozilla Firefox ESR (es-AR) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (es-CL) | 153.0.0 | Mozilla Firefox ESR (es-CL) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (es-ES) | 153.0.0 | Mozilla Firefox ESR (es-ES) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (es-MX) | 153.0.0 | Mozilla Firefox ESR (es-MX) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (et) | 153.0.0 | Mozilla Firefox ESR (et) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (eu) | 153.0.0 | Mozilla Firefox ESR (eu) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (fa) | 153.0.0 | Mozilla Firefox ESR (fa) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ff) | 153.0.0 | Mozilla Firefox ESR (ff) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (fi) | 153.0.0 | Mozilla Firefox ESR (fi) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (fr) | 153.0.0 | Mozilla Firefox ESR (fr) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (fur) | 153.0.0 | Mozilla Firefox ESR (fur) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (fy-NL) | 153.0.0 | Mozilla Firefox ESR (fy-NL) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ga-IE) | 153.0.0 | Mozilla Firefox ESR (ga-IE) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (gd) | 153.0.0 | Mozilla Firefox ESR (gd) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (gl) | 153.0.0 | Mozilla Firefox ESR (gl) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (gn) | 153.0.0 | Mozilla Firefox ESR (gn) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (gu-IN) | 153.0.0 | Mozilla Firefox ESR (gu-IN) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (he) | 153.0.0 | Mozilla Firefox ESR (he) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (hi-IN) | 153.0.0 | Mozilla Firefox ESR (hi-IN) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (hr) | 153.0.0 | Mozilla Firefox ESR (hr) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (hsb) | 153.0.0 | Mozilla Firefox ESR (hsb) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (hu) | 153.0.0 | Mozilla Firefox ESR (hu) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (hy-AM) | 153.0.0 | Mozilla Firefox ESR (hy-AM) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ia) | 153.0.0 | Mozilla Firefox ESR (ia) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (id) | 153.0.0 | Mozilla Firefox ESR (id) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (is) | 153.0.0 | Mozilla Firefox ESR (is) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (it) | 153.0.0 | Mozilla Firefox ESR (it) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ja) | 153.0.0 | Mozilla Firefox ESR (ja) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ka) | 153.0.0 | Mozilla Firefox ESR (ka) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (kab) | 153.0.0 | Mozilla Firefox ESR (kab) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (kk) | 153.0.0 | Mozilla Firefox ESR (kk) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (km) | 153.0.0 | Mozilla Firefox ESR (km) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (kn) | 153.0.0 | Mozilla Firefox ESR (kn) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ko) | 153.0.0 | Mozilla Firefox ESR (ko) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (lij) | 153.0.0 | Mozilla Firefox ESR (lij) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (lt) | 153.0.0 | Mozilla Firefox ESR (lt) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (lv) | 153.0.0 | Mozilla Firefox ESR (lv) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (mk) | 153.0.0 | Mozilla Firefox ESR (mk) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (mr) | 153.0.0 | Mozilla Firefox ESR (mr) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ms) | 153.0.0 | Mozilla Firefox ESR (ms) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (my) | 153.0.0 | Mozilla Firefox ESR (my) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (nb-NO) | 153.0.0 | Mozilla Firefox ESR (nb-NO) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ne-NP) | 153.0.0 | Mozilla Firefox ESR (ne-NP) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (nl) | 153.0.0 | Mozilla Firefox ESR (nl) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (nn-NO) | 153.0.0 | Mozilla Firefox ESR (nn-NO) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (oc) | 153.0.0 | Mozilla Firefox ESR (oc) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (pa-IN) | 153.0.0 | Mozilla Firefox ESR (pa-IN) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (pl) | 153.0.0 | Mozilla Firefox ESR (pl) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (pt-BR) | 153.0.0 | Mozilla Firefox ESR (pt-BR) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (pt-PT) | 153.0.0 | Mozilla Firefox ESR (pt-PT) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (rm) | 153.0.0 | Mozilla Firefox ESR (rm) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ro) | 153.0.0 | Mozilla Firefox ESR (ro) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ru) | 153.0.0 | Mozilla Firefox ESR (ru) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (sat) | 153.0.0 | Mozilla Firefox ESR (sat) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (sc) | 153.0.0 | Mozilla Firefox ESR (sc) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (sco) | 153.0.0 | Mozilla Firefox ESR (sco) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (si) | 153.0.0 | Mozilla Firefox ESR (si) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (sk) | 153.0.0 | Mozilla Firefox ESR (sk) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (sl) | 153.0.0 | Mozilla Firefox ESR (sl) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (son) | 153.0.0 | Mozilla Firefox ESR (son) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (sq) | 153.0.0 | Mozilla Firefox ESR (sq) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (sr) | 153.0.0 | Mozilla Firefox ESR (sr) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (sv-SE) | 153.0.0 | Mozilla Firefox ESR (sv-SE) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (szl) | 153.0.0 | Mozilla Firefox ESR (szl) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ta) | 153.0.0 | Mozilla Firefox ESR (ta) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (te) | 153.0.0 | Mozilla Firefox ESR (te) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (tg) | 153.0.0 | Mozilla Firefox ESR (tg) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (th) | 153.0.0 | Mozilla Firefox ESR (th) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (tl) | 153.0.0 | Mozilla Firefox ESR (tl) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (tr) | 153.0.0 | Mozilla Firefox ESR (tr) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (trs) | 153.0.0 | Mozilla Firefox ESR (trs) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (uk) | 153.0.0 | Mozilla Firefox ESR (uk) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (ur) | 153.0.0 | Mozilla Firefox ESR (ur) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (uz) | 153.0.0 | Mozilla Firefox ESR (uz) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (vi) | 153.0.0 | Mozilla Firefox ESR (vi) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (xh) | 153.0.0 | Mozilla Firefox ESR (xh) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (zh-CN) | 153.0.0 | Mozilla Firefox ESR (zh-CN) 153.0.0 | Jul 20, 2026 |
| Mozilla Firefox ESR (zh-TW) | 153.0.0 | Mozilla Firefox ESR (zh-TW) 153.0.0 | Jul 20, 2026 |
| Mozilla Thunderbird (af) | 151.0 | Mozilla Thunderbird (af) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (ar) | 151.0 | Mozilla Thunderbird (ar) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (ast) | 151.0 | Mozilla Thunderbird (ast) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (be) | 151.0 | Mozilla Thunderbird (be) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (bg) | 151.0 | Mozilla Thunderbird (bg) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (br) | 151.0 | Mozilla Thunderbird (br) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (ca) | 151.0 | Mozilla Thunderbird (ca) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (cak) | 151.0 | Mozilla Thunderbird (cak) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (cs) | 151.0 | Mozilla Thunderbird (cs) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (cy) | 151.0 | Mozilla Thunderbird (cy) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (da) | 151.0 | Mozilla Thunderbird (da) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (de) | 151.0 | Mozilla Thunderbird (de) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (dsb) | 151.0 | Mozilla Thunderbird (dsb) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (el) | 151.0 | Mozilla Thunderbird (el) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (en-CA) | 151.0 | Mozilla Thunderbird (en-CA) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (en-GB) | 151.0 | Mozilla Thunderbird (en-GB) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (en-US) | 151.0 | Mozilla Thunderbird (en-US) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (es-AR) | 151.0 | Mozilla Thunderbird (es-AR) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (es-ES) | 151.0 | Mozilla Thunderbird (es-ES) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (es-MX) | 151.0 | Mozilla Thunderbird (es-MX) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (et) | 151.0 | Mozilla Thunderbird (et) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (eu) | 151.0 | Mozilla Thunderbird (eu) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (fi) | 151.0 | Mozilla Thunderbird (fi) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (fr) | 151.0 | Mozilla Thunderbird (fr) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (fy-NL) | 151.0 | Mozilla Thunderbird (fy-NL) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (ga-IE) | 151.0 | Mozilla Thunderbird (ga-IE) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (gd) | 151.0 | Mozilla Thunderbird (gd) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (gl) | 151.0 | Mozilla Thunderbird (gl) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (he) | 151.0 | Mozilla Thunderbird (he) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (hr) | 151.0 | Mozilla Thunderbird (hr) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (hsb) | 151.0 | Mozilla Thunderbird (hsb) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (hu) | 151.0 | Mozilla Thunderbird (hu) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (hy-AM) | 151.0 | Mozilla Thunderbird (hy-AM) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (id) | 151.0 | Mozilla Thunderbird (id) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (is) | 151.0 | Mozilla Thunderbird (is) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (it) | 151.0 | Mozilla Thunderbird (it) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (ja) | 151.0 | Mozilla Thunderbird (ja) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (ka) | 151.0 | Mozilla Thunderbird (ka) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (kab) | 151.0 | Mozilla Thunderbird (kab) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (kk) | 151.0 | Mozilla Thunderbird (kk) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (ko) | 151.0 | Mozilla Thunderbird (ko) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (lt) | 151.0 | Mozilla Thunderbird (lt) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (lv) | 151.0 | Mozilla Thunderbird (lv) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (ms) | 151.0 | Mozilla Thunderbird (ms) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (nb-NO) | 151.0 | Mozilla Thunderbird (nb-NO) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (nl) | 151.0 | Mozilla Thunderbird (nl) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (nn-NO) | 151.0 | Mozilla Thunderbird (nn-NO) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (pa-IN) | 151.0 | Mozilla Thunderbird (pa-IN) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (pl) | 151.0 | Mozilla Thunderbird (pl) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (pt-BR) | 151.0 | Mozilla Thunderbird (pt-BR) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (pt-PT) | 151.0 | Mozilla Thunderbird (pt-PT) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (rm) | 151.0 | Mozilla Thunderbird (rm) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (ro) | 151.0 | Mozilla Thunderbird (ro) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (ru) | 151.0 | Mozilla Thunderbird (ru) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (sk) | 151.0 | Mozilla Thunderbird (sk) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (sl) | 151.0 | Mozilla Thunderbird (sl) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (sq) | 151.0 | Mozilla Thunderbird (sq) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (sr) | 151.0 | Mozilla Thunderbird (sr) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (sv-SE) | 151.0 | Mozilla Thunderbird (sv-SE) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (th) | 151.0 | Mozilla Thunderbird (th) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (tr) | 151.0 | Mozilla Thunderbird (tr) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (uk) | 151.0 | Mozilla Thunderbird (uk) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (uz) | 151.0 | Mozilla Thunderbird (uz) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (vi) | 151.0 | Mozilla Thunderbird (vi) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (zh-CN) | 151.0 | Mozilla Thunderbird (zh-CN) 151.0 | May 19, 2026 |
| Mozilla Thunderbird (zh-TW) | 151.0 | Mozilla Thunderbird (zh-TW) 151.0 | May 19, 2026 |
| Mozilla Thunderbird ESR (af) | 153.0.1 | Mozilla Thunderbird ESR (af) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (ar) | 153.0.1 | Mozilla Thunderbird ESR (ar) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (ast) | 153.0.1 | Mozilla Thunderbird ESR (ast) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (be) | 153.0.1 | Mozilla Thunderbird ESR (be) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (bg) | 153.0.1 | Mozilla Thunderbird ESR (bg) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (br) | 153.0.1 | Mozilla Thunderbird ESR (br) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (ca) | 153.0.1 | Mozilla Thunderbird ESR (ca) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (cak) | 153.0.1 | Mozilla Thunderbird ESR (cak) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (cs) | 153.0.1 | Mozilla Thunderbird ESR (cs) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (cy) | 153.0.1 | Mozilla Thunderbird ESR (cy) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (da) | 153.0.1 | Mozilla Thunderbird ESR (da) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (de) | 153.0.1 | Mozilla Thunderbird ESR (de) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (dsb) | 153.0.1 | Mozilla Thunderbird ESR (dsb) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (el) | 153.0.1 | Mozilla Thunderbird ESR (el) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (en-CA) | 153.0.1 | Mozilla Thunderbird ESR (en-CA) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (en-GB) | 153.0.1 | Mozilla Thunderbird ESR (en-GB) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (en-US) | 153.0.1 | Mozilla Thunderbird ESR (en-US) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (es-AR) | 153.0.1 | Mozilla Thunderbird ESR (es-AR) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (es-ES) | 153.0.1 | Mozilla Thunderbird ESR (es-ES) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (es-MX) | 153.0.1 | Mozilla Thunderbird ESR (es-MX) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (et) | 153.0.1 | Mozilla Thunderbird ESR (et) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (eu) | 153.0.1 | Mozilla Thunderbird ESR (eu) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (fi) | 153.0.1 | Mozilla Thunderbird ESR (fi) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (fr) | 153.0.1 | Mozilla Thunderbird ESR (fr) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (fy-NL) | 153.0.1 | Mozilla Thunderbird ESR (fy-NL) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (ga-IE) | 153.0.1 | Mozilla Thunderbird ESR (ga-IE) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (gd) | 153.0.1 | Mozilla Thunderbird ESR (gd) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (gl) | 153.0.1 | Mozilla Thunderbird ESR (gl) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (he) | 153.0.1 | Mozilla Thunderbird ESR (he) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (hr) | 153.0.1 | Mozilla Thunderbird ESR (hr) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (hsb) | 153.0.1 | Mozilla Thunderbird ESR (hsb) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (hu) | 153.0.1 | Mozilla Thunderbird ESR (hu) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (hy-AM) | 153.0.1 | Mozilla Thunderbird ESR (hy-AM) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (id) | 153.0.1 | Mozilla Thunderbird ESR (id) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (is) | 153.0.1 | Mozilla Thunderbird ESR (is) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (it) | 153.0.1 | Mozilla Thunderbird ESR (it) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (ja) | 153.0.1 | Mozilla Thunderbird ESR (ja) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (ka) | 153.0.1 | Mozilla Thunderbird ESR (ka) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (kab) | 153.0.1 | Mozilla Thunderbird ESR (kab) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (kk) | 153.0.1 | Mozilla Thunderbird ESR (kk) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (ko) | 153.0.1 | Mozilla Thunderbird ESR (ko) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (lt) | 153.0.1 | Mozilla Thunderbird ESR (lt) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (lv) | 153.0.1 | Mozilla Thunderbird ESR (lv) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (ms) | 153.0.1 | Mozilla Thunderbird ESR (ms) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (nb-NO) | 153.0.1 | Mozilla Thunderbird ESR (nb-NO) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (nl) | 153.0.1 | Mozilla Thunderbird ESR (nl) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (nn-NO) | 153.0.1 | Mozilla Thunderbird ESR (nn-NO) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (pa-IN) | 153.0.1 | Mozilla Thunderbird ESR (pa-IN) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (pl) | 153.0.1 | Mozilla Thunderbird ESR (pl) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (pt-BR) | 153.0.1 | Mozilla Thunderbird ESR (pt-BR) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (pt-PT) | 153.0.1 | Mozilla Thunderbird ESR (pt-PT) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (rm) | 153.0.1 | Mozilla Thunderbird ESR (rm) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (ro) | 153.0.1 | Mozilla Thunderbird ESR (ro) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (ru) | 153.0.1 | Mozilla Thunderbird ESR (ru) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (sk) | 153.0.1 | Mozilla Thunderbird ESR (sk) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (sl) | 153.0.1 | Mozilla Thunderbird ESR (sl) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (sq) | 153.0.1 | Mozilla Thunderbird ESR (sq) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (sr) | 153.0.1 | Mozilla Thunderbird ESR (sr) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (sv-SE) | 153.0.1 | Mozilla Thunderbird ESR (sv-SE) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (th) | 153.0.1 | Mozilla Thunderbird ESR (th) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (tr) | 153.0.1 | Mozilla Thunderbird ESR (tr) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (uk) | 153.0.1 | Mozilla Thunderbird ESR (uk) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (uz) | 153.0.1 | Mozilla Thunderbird ESR (uz) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (vi) | 153.0.1 | Mozilla Thunderbird ESR (vi) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (zh-CN) | 153.0.1 | Mozilla Thunderbird ESR (zh-CN) 153.0.1 | Jul 23, 2026 |
| Mozilla Thunderbird ESR (zh-TW) | 153.0.1 | Mozilla Thunderbird ESR (zh-TW) 153.0.1 | Jul 23, 2026 |
| macOS | |||
| Mozilla Firefox | 151.0.2 | Mozilla Firefox 151.0.2 | May 25, 2026 |
| Mozilla Thunderbird | 151.0.1 | Mozilla Thunderbird 151.0.1 | May 22, 2026 |
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