CVE-2025-13027
Memory safety bugs fixed in Firefox 145 and Thunderbird 145
CVE-2025-13027 is fixed in 305 products on 2 platforms, first by Firefox Developer Edition (ach) 145.0, released October 31, 2025. It is not reported as exploited. Patch Radar priority: High.
HighFixed on 2 platforms
CVSS
8.1
No vendor severity
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0036
29th percentile
Memory safety bugs present in Firefox 144 and Thunderbird 144. 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 145 and Thunderbird 145.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Firefox Developer Edition (ach) | 145.0 | Firefox Developer Edition (ach) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (af) | 145.0 | Firefox Developer Edition (af) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (an) | 145.0 | Firefox Developer Edition (an) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (ar) | 145.0 | Firefox Developer Edition (ar) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (ast) | 145.0 | Firefox Developer Edition (ast) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (az) | 145.0 | Firefox Developer Edition (az) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (be) | 145.0 | Firefox Developer Edition (be) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (bg) | 145.0 | Firefox Developer Edition (bg) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (bn) | 145.0 | Firefox Developer Edition (bn) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (br) | 145.0 | Firefox Developer Edition (br) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (bs) | 145.0 | Firefox Developer Edition (bs) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (ca) | 145.0 | Firefox Developer Edition (ca) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (ca-valencia) | 145.0 | Firefox Developer Edition (ca-valencia) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (cak) | 145.0 | Firefox Developer Edition (cak) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (cs) | 145.0 | Firefox Developer Edition (cs) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (cy) | 145.0 | Firefox Developer Edition (cy) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (da) | 145.0 | Firefox Developer Edition (da) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (de) | 145.0 | Firefox Developer Edition (de) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (dsb) | 145.0 | Firefox Developer Edition (dsb) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (el) | 145.0 | Firefox Developer Edition (el) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (en-CA) | 145.0 | Firefox Developer Edition (en-CA) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (en-GB) | 145.0 | Firefox Developer Edition (en-GB) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (en-US) | 145.0 | Firefox Developer Edition (en-US) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (eo) | 145.0 | Firefox Developer Edition (eo) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (es-AR) | 145.0 | Firefox Developer Edition (es-AR) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (es-CL) | 145.0 | Firefox Developer Edition (es-CL) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (es-ES) | 145.0 | Firefox Developer Edition (es-ES) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (es-MX) | 145.0 | Firefox Developer Edition (es-MX) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (et) | 145.0 | Firefox Developer Edition (et) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (eu) | 145.0 | Firefox Developer Edition (eu) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (fa) | 145.0 | Firefox Developer Edition (fa) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (ff) | 145.0 | Firefox Developer Edition (ff) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (fi) | 145.0 | Firefox Developer Edition (fi) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (fr) | 145.0 | Firefox Developer Edition (fr) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (fur) | 145.0 | Firefox Developer Edition (fur) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (fy-NL) | 145.0 | Firefox Developer Edition (fy-NL) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (ga-IE) | 145.0 | Firefox Developer Edition (ga-IE) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (gd) | 145.0 | Firefox Developer Edition (gd) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (gl) | 145.0 | Firefox Developer Edition (gl) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (gn) | 145.0 | Firefox Developer Edition (gn) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (gu-IN) | 145.0 | Firefox Developer Edition (gu-IN) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (he) | 145.0 | Firefox Developer Edition (he) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (hi-IN) | 145.0 | Firefox Developer Edition (hi-IN) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (hr) | 145.0 | Firefox Developer Edition (hr) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (hsb) | 145.0 | Firefox Developer Edition (hsb) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (hu) | 145.0 | Firefox Developer Edition (hu) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (hy-AM) | 145.0 | Firefox Developer Edition (hy-AM) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (ia) | 145.0 | Firefox Developer Edition (ia) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (id) | 145.0 | Firefox Developer Edition (id) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (is) | 145.0 | Firefox Developer Edition (is) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (it) | 145.0 | Firefox Developer Edition (it) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (ja) | 145.0 | Firefox Developer Edition (ja) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (ka) | 145.0 | Firefox Developer Edition (ka) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (kab) | 145.0 | Firefox Developer Edition (kab) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (kk) | 145.0 | Firefox Developer Edition (kk) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (km) | 145.0 | Firefox Developer Edition (km) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (kn) | 145.0 | Firefox Developer Edition (kn) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (ko) | 145.0 | Firefox Developer Edition (ko) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (lij) | 145.0 | Firefox Developer Edition (lij) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (lt) | 145.0 | Firefox Developer Edition (lt) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (lv) | 145.0 | Firefox Developer Edition (lv) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (mk) | 145.0 | Firefox Developer Edition (mk) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (mr) | 145.0 | Firefox Developer Edition (mr) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (ms) | 145.0 | Firefox Developer Edition (ms) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (my) | 145.0 | Firefox Developer Edition (my) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (nb-NO) | 145.0 | Firefox Developer Edition (nb-NO) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (ne-NP) | 145.0 | Firefox Developer Edition (ne-NP) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (nl) | 145.0 | Firefox Developer Edition (nl) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (nn-NO) | 145.0 | Firefox Developer Edition (nn-NO) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (oc) | 145.0 | Firefox Developer Edition (oc) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (pa-IN) | 145.0 | Firefox Developer Edition (pa-IN) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (pl) | 145.0 | Firefox Developer Edition (pl) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (pt-BR) | 145.0 | Firefox Developer Edition (pt-BR) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (pt-PT) | 145.0 | Firefox Developer Edition (pt-PT) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (rm) | 145.0 | Firefox Developer Edition (rm) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (ro) | 145.0 | Firefox Developer Edition (ro) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (ru) | 145.0 | Firefox Developer Edition (ru) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (sc) | 145.0 | Firefox Developer Edition (sc) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (sco) | 145.0 | Firefox Developer Edition (sco) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (si) | 145.0 | Firefox Developer Edition (si) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (sk) | 145.0 | Firefox Developer Edition (sk) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (sl) | 145.0 | Firefox Developer Edition (sl) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (son) | 145.0 | Firefox Developer Edition (son) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (sq) | 145.0 | Firefox Developer Edition (sq) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (sr) | 145.0 | Firefox Developer Edition (sr) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (sv-SE) | 145.0 | Firefox Developer Edition (sv-SE) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (szl) | 145.0 | Firefox Developer Edition (szl) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (ta) | 145.0 | Firefox Developer Edition (ta) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (te) | 145.0 | Firefox Developer Edition (te) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (tg) | 145.0 | Firefox Developer Edition (tg) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (th) | 145.0 | Firefox Developer Edition (th) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (tl) | 145.0 | Firefox Developer Edition (tl) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (tr) | 145.0 | Firefox Developer Edition (tr) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (trs) | 145.0 | Firefox Developer Edition (trs) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (uk) | 145.0 | Firefox Developer Edition (uk) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (ur) | 145.0 | Firefox Developer Edition (ur) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (uz) | 145.0 | Firefox Developer Edition (uz) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (vi) | 145.0 | Firefox Developer Edition (vi) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (xh) | 145.0 | Firefox Developer Edition (xh) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (zh-CN) | 145.0 | Firefox Developer Edition (zh-CN) 145.0 | Oct 31, 2025 |
| Firefox Developer Edition (zh-TW) | 145.0 | Firefox Developer Edition (zh-TW) 145.0 | Oct 31, 2025 |
| Mozilla Firefox (ach) | 145.0 | Mozilla Firefox (ach) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (af) | 145.0 | Mozilla Firefox (af) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (an) | 145.0 | Mozilla Firefox (an) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (ar) | 145.0 | Mozilla Firefox (ar) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (ast) | 145.0 | Mozilla Firefox (ast) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (az) | 145.0 | Mozilla Firefox (az) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (be) | 145.0 | Mozilla Firefox (be) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (bg) | 145.0 | Mozilla Firefox (bg) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (bn) | 145.0 | Mozilla Firefox (bn) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (br) | 145.0 | Mozilla Firefox (br) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (bs) | 145.0 | Mozilla Firefox (bs) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (ca) | 145.0 | Mozilla Firefox (ca) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (ca-valencia) | 145.0 | Mozilla Firefox (ca-valencia) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (cak) | 145.0 | Mozilla Firefox (cak) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (cs) | 145.0 | Mozilla Firefox (cs) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (cy) | 145.0 | Mozilla Firefox (cy) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (da) | 145.0 | Mozilla Firefox (da) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (de) | 145.0 | Mozilla Firefox (de) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (dsb) | 145.0 | Mozilla Firefox (dsb) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (el) | 145.0 | Mozilla Firefox (el) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (en-CA) | 145.0 | Mozilla Firefox (en-CA) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (en-GB) | 145.0 | Mozilla Firefox (en-GB) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (en-US) | 145.0 | Mozilla Firefox (en-US) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (eo) | 145.0 | Mozilla Firefox (eo) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (es-AR) | 145.0 | Mozilla Firefox (es-AR) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (es-CL) | 145.0 | Mozilla Firefox (es-CL) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (es-ES) | 145.0 | Mozilla Firefox (es-ES) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (es-MX) | 145.0 | Mozilla Firefox (es-MX) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (et) | 145.0 | Mozilla Firefox (et) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (eu) | 145.0 | Mozilla Firefox (eu) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (fa) | 145.0 | Mozilla Firefox (fa) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (ff) | 145.0 | Mozilla Firefox (ff) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (fi) | 145.0 | Mozilla Firefox (fi) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (fr) | 145.0 | Mozilla Firefox (fr) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (fur) | 145.0 | Mozilla Firefox (fur) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (fy-NL) | 145.0 | Mozilla Firefox (fy-NL) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (ga-IE) | 145.0 | Mozilla Firefox (ga-IE) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (gd) | 145.0 | Mozilla Firefox (gd) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (gl) | 145.0 | Mozilla Firefox (gl) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (gn) | 145.0 | Mozilla Firefox (gn) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (gu-IN) | 145.0 | Mozilla Firefox (gu-IN) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (he) | 145.0 | Mozilla Firefox (he) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (hi-IN) | 145.0 | Mozilla Firefox (hi-IN) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (hr) | 145.0 | Mozilla Firefox (hr) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (hsb) | 145.0 | Mozilla Firefox (hsb) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (hu) | 145.0 | Mozilla Firefox (hu) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (hy-AM) | 145.0 | Mozilla Firefox (hy-AM) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (ia) | 145.0 | Mozilla Firefox (ia) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (id) | 145.0 | Mozilla Firefox (id) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (is) | 145.0 | Mozilla Firefox (is) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (it) | 145.0 | Mozilla Firefox (it) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (ja) | 145.0 | Mozilla Firefox (ja) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (ka) | 145.0 | Mozilla Firefox (ka) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (kab) | 145.0 | Mozilla Firefox (kab) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (kk) | 145.0 | Mozilla Firefox (kk) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (km) | 145.0 | Mozilla Firefox (km) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (kn) | 145.0 | Mozilla Firefox (kn) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (ko) | 145.0 | Mozilla Firefox (ko) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (lij) | 145.0 | Mozilla Firefox (lij) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (lt) | 145.0 | Mozilla Firefox (lt) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (lv) | 145.0 | Mozilla Firefox (lv) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (mk) | 145.0 | Mozilla Firefox (mk) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (mr) | 145.0 | Mozilla Firefox (mr) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (ms) | 145.0 | Mozilla Firefox (ms) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (my) | 145.0 | Mozilla Firefox (my) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (nb-NO) | 145.0 | Mozilla Firefox (nb-NO) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (ne-NP) | 145.0 | Mozilla Firefox (ne-NP) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (nl) | 145.0 | Mozilla Firefox (nl) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (nn-NO) | 145.0 | Mozilla Firefox (nn-NO) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (oc) | 145.0 | Mozilla Firefox (oc) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (pa-IN) | 145.0 | Mozilla Firefox (pa-IN) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (pl) | 145.0 | Mozilla Firefox (pl) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (pt-BR) | 145.0 | Mozilla Firefox (pt-BR) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (pt-PT) | 145.0 | Mozilla Firefox (pt-PT) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (rm) | 145.0 | Mozilla Firefox (rm) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (ro) | 145.0 | Mozilla Firefox (ro) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (ru) | 145.0 | Mozilla Firefox (ru) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (sc) | 145.0 | Mozilla Firefox (sc) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (sco) | 145.0 | Mozilla Firefox (sco) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (si) | 145.0 | Mozilla Firefox (si) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (sk) | 145.0 | Mozilla Firefox (sk) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (sl) | 145.0 | Mozilla Firefox (sl) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (son) | 145.0 | Mozilla Firefox (son) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (sq) | 145.0 | Mozilla Firefox (sq) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (sr) | 145.0 | Mozilla Firefox (sr) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (sv-SE) | 145.0 | Mozilla Firefox (sv-SE) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (szl) | 145.0 | Mozilla Firefox (szl) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (ta) | 145.0 | Mozilla Firefox (ta) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (te) | 145.0 | Mozilla Firefox (te) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (tg) | 145.0 | Mozilla Firefox (tg) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (th) | 145.0 | Mozilla Firefox (th) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (tl) | 145.0 | Mozilla Firefox (tl) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (tr) | 145.0 | Mozilla Firefox (tr) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (trs) | 145.0 | Mozilla Firefox (trs) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (uk) | 145.0 | Mozilla Firefox (uk) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (ur) | 145.0 | Mozilla Firefox (ur) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (uz) | 145.0 | Mozilla Firefox (uz) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (vi) | 145.0 | Mozilla Firefox (vi) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (xh) | 145.0 | Mozilla Firefox (xh) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (zh-CN) | 145.0 | Mozilla Firefox (zh-CN) 145.0 | Nov 11, 2025 |
| Mozilla Firefox (zh-TW) | 145.0 | Mozilla Firefox (zh-TW) 145.0 | Nov 11, 2025 |
| 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 |
| macOS | |||
| Mozilla Firefox | 150.0.2 | Mozilla Firefox 150.0.2 | May 6, 2026 |
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