CVE-2026-4697
Incorrect boundary conditions in the Audio/Video: Web Codecs component
CVE-2026-4697 is fixed in 313 products on 3 platforms, first by Firefox Developer Edition (ach) 149.0, released March 13, 2026. It is not reported as exploited. Patch Radar priority: High.
HighFixed on 3 platforms
CVSS
8.2
Important
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0071
53rd percentile
Incorrect boundary conditions in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 149, Firefox ESR 140.9, Thunderbird 149, and Thunderbird 140.9.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Firefox Developer Edition (ach) | 149.0 | Firefox Developer Edition (ach) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (af) | 149.0 | Firefox Developer Edition (af) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (an) | 149.0 | Firefox Developer Edition (an) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (ar) | 149.0 | Firefox Developer Edition (ar) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (ast) | 149.0 | Firefox Developer Edition (ast) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (az) | 149.0 | Firefox Developer Edition (az) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (be) | 149.0 | Firefox Developer Edition (be) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (bg) | 149.0 | Firefox Developer Edition (bg) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (bn) | 149.0 | Firefox Developer Edition (bn) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (br) | 149.0 | Firefox Developer Edition (br) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (bs) | 149.0 | Firefox Developer Edition (bs) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (ca) | 149.0 | Firefox Developer Edition (ca) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (ca-valencia) | 149.0 | Firefox Developer Edition (ca-valencia) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (cak) | 149.0 | Firefox Developer Edition (cak) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (cs) | 149.0 | Firefox Developer Edition (cs) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (cy) | 149.0 | Firefox Developer Edition (cy) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (da) | 149.0 | Firefox Developer Edition (da) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (de) | 149.0 | Firefox Developer Edition (de) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (dsb) | 149.0 | Firefox Developer Edition (dsb) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (el) | 149.0 | Firefox Developer Edition (el) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (en-CA) | 149.0 | Firefox Developer Edition (en-CA) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (en-GB) | 149.0 | Firefox Developer Edition (en-GB) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (en-US) | 149.0 | Firefox Developer Edition (en-US) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (eo) | 149.0 | Firefox Developer Edition (eo) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (es-AR) | 149.0 | Firefox Developer Edition (es-AR) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (es-CL) | 149.0 | Firefox Developer Edition (es-CL) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (es-ES) | 149.0 | Firefox Developer Edition (es-ES) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (es-MX) | 149.0 | Firefox Developer Edition (es-MX) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (et) | 149.0 | Firefox Developer Edition (et) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (eu) | 149.0 | Firefox Developer Edition (eu) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (fa) | 149.0 | Firefox Developer Edition (fa) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (ff) | 149.0 | Firefox Developer Edition (ff) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (fi) | 149.0 | Firefox Developer Edition (fi) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (fr) | 149.0 | Firefox Developer Edition (fr) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (fur) | 149.0 | Firefox Developer Edition (fur) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (fy-NL) | 149.0 | Firefox Developer Edition (fy-NL) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (ga-IE) | 149.0 | Firefox Developer Edition (ga-IE) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (gd) | 149.0 | Firefox Developer Edition (gd) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (gl) | 149.0 | Firefox Developer Edition (gl) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (gn) | 149.0 | Firefox Developer Edition (gn) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (gu-IN) | 149.0 | Firefox Developer Edition (gu-IN) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (he) | 149.0 | Firefox Developer Edition (he) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (hi-IN) | 149.0 | Firefox Developer Edition (hi-IN) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (hr) | 149.0 | Firefox Developer Edition (hr) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (hsb) | 149.0 | Firefox Developer Edition (hsb) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (hu) | 149.0 | Firefox Developer Edition (hu) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (hy-AM) | 149.0 | Firefox Developer Edition (hy-AM) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (ia) | 149.0 | Firefox Developer Edition (ia) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (id) | 149.0 | Firefox Developer Edition (id) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (is) | 149.0 | Firefox Developer Edition (is) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (it) | 149.0 | Firefox Developer Edition (it) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (ja) | 149.0 | Firefox Developer Edition (ja) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (ka) | 149.0 | Firefox Developer Edition (ka) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (kab) | 149.0 | Firefox Developer Edition (kab) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (kk) | 149.0 | Firefox Developer Edition (kk) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (km) | 149.0 | Firefox Developer Edition (km) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (kn) | 149.0 | Firefox Developer Edition (kn) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (ko) | 149.0 | Firefox Developer Edition (ko) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (lij) | 149.0 | Firefox Developer Edition (lij) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (lt) | 149.0 | Firefox Developer Edition (lt) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (lv) | 149.0 | Firefox Developer Edition (lv) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (mk) | 149.0 | Firefox Developer Edition (mk) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (mr) | 149.0 | Firefox Developer Edition (mr) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (ms) | 149.0 | Firefox Developer Edition (ms) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (my) | 149.0 | Firefox Developer Edition (my) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (nb-NO) | 149.0 | Firefox Developer Edition (nb-NO) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (ne-NP) | 149.0 | Firefox Developer Edition (ne-NP) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (nl) | 149.0 | Firefox Developer Edition (nl) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (nn-NO) | 149.0 | Firefox Developer Edition (nn-NO) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (oc) | 149.0 | Firefox Developer Edition (oc) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (pa-IN) | 149.0 | Firefox Developer Edition (pa-IN) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (pl) | 149.0 | Firefox Developer Edition (pl) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (pt-BR) | 149.0 | Firefox Developer Edition (pt-BR) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (pt-PT) | 149.0 | Firefox Developer Edition (pt-PT) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (rm) | 149.0 | Firefox Developer Edition (rm) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (ro) | 149.0 | Firefox Developer Edition (ro) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (ru) | 149.0 | Firefox Developer Edition (ru) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (sc) | 149.0 | Firefox Developer Edition (sc) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (sco) | 149.0 | Firefox Developer Edition (sco) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (si) | 149.0 | Firefox Developer Edition (si) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (sk) | 149.0 | Firefox Developer Edition (sk) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (sl) | 149.0 | Firefox Developer Edition (sl) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (son) | 149.0 | Firefox Developer Edition (son) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (sq) | 149.0 | Firefox Developer Edition (sq) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (sr) | 149.0 | Firefox Developer Edition (sr) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (sv-SE) | 149.0 | Firefox Developer Edition (sv-SE) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (szl) | 149.0 | Firefox Developer Edition (szl) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (ta) | 149.0 | Firefox Developer Edition (ta) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (te) | 149.0 | Firefox Developer Edition (te) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (tg) | 149.0 | Firefox Developer Edition (tg) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (th) | 149.0 | Firefox Developer Edition (th) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (tl) | 149.0 | Firefox Developer Edition (tl) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (tr) | 149.0 | Firefox Developer Edition (tr) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (trs) | 149.0 | Firefox Developer Edition (trs) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (uk) | 149.0 | Firefox Developer Edition (uk) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (ur) | 149.0 | Firefox Developer Edition (ur) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (uz) | 149.0 | Firefox Developer Edition (uz) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (vi) | 149.0 | Firefox Developer Edition (vi) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (xh) | 149.0 | Firefox Developer Edition (xh) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (zh-CN) | 149.0 | Firefox Developer Edition (zh-CN) 149.0 | Mar 13, 2026 |
| Firefox Developer Edition (zh-TW) | 149.0 | Firefox Developer Edition (zh-TW) 149.0 | Mar 13, 2026 |
| Mozilla Firefox (ach) | 149.0 | Mozilla Firefox (ach) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (af) | 149.0 | Mozilla Firefox (af) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (an) | 149.0 | Mozilla Firefox (an) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (ar) | 149.0 | Mozilla Firefox (ar) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (ast) | 149.0 | Mozilla Firefox (ast) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (az) | 149.0 | Mozilla Firefox (az) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (be) | 149.0 | Mozilla Firefox (be) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (bg) | 149.0 | Mozilla Firefox (bg) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (bn) | 149.0 | Mozilla Firefox (bn) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (br) | 149.0 | Mozilla Firefox (br) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (bs) | 149.0 | Mozilla Firefox (bs) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (ca) | 149.0 | Mozilla Firefox (ca) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (ca-valencia) | 149.0 | Mozilla Firefox (ca-valencia) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (cak) | 149.0 | Mozilla Firefox (cak) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (cs) | 149.0 | Mozilla Firefox (cs) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (cy) | 149.0 | Mozilla Firefox (cy) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (da) | 149.0 | Mozilla Firefox (da) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (de) | 149.0 | Mozilla Firefox (de) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (dsb) | 149.0 | Mozilla Firefox (dsb) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (el) | 149.0 | Mozilla Firefox (el) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (en-CA) | 149.0 | Mozilla Firefox (en-CA) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (en-GB) | 149.0 | Mozilla Firefox (en-GB) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (en-US) | 149.0 | Mozilla Firefox (en-US) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (eo) | 149.0 | Mozilla Firefox (eo) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (es-AR) | 149.0 | Mozilla Firefox (es-AR) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (es-CL) | 149.0 | Mozilla Firefox (es-CL) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (es-ES) | 149.0 | Mozilla Firefox (es-ES) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (es-MX) | 149.0 | Mozilla Firefox (es-MX) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (et) | 149.0 | Mozilla Firefox (et) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (eu) | 149.0 | Mozilla Firefox (eu) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (fa) | 149.0 | Mozilla Firefox (fa) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (ff) | 149.0 | Mozilla Firefox (ff) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (fi) | 149.0 | Mozilla Firefox (fi) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (fr) | 149.0 | Mozilla Firefox (fr) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (fur) | 149.0 | Mozilla Firefox (fur) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (fy-NL) | 149.0 | Mozilla Firefox (fy-NL) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (ga-IE) | 149.0 | Mozilla Firefox (ga-IE) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (gd) | 149.0 | Mozilla Firefox (gd) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (gl) | 149.0 | Mozilla Firefox (gl) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (gn) | 149.0 | Mozilla Firefox (gn) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (gu-IN) | 149.0 | Mozilla Firefox (gu-IN) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (he) | 149.0 | Mozilla Firefox (he) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (hi-IN) | 149.0 | Mozilla Firefox (hi-IN) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (hr) | 149.0 | Mozilla Firefox (hr) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (hsb) | 149.0 | Mozilla Firefox (hsb) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (hu) | 149.0 | Mozilla Firefox (hu) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (hy-AM) | 149.0 | Mozilla Firefox (hy-AM) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (ia) | 149.0 | Mozilla Firefox (ia) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (id) | 149.0 | Mozilla Firefox (id) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (is) | 149.0 | Mozilla Firefox (is) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (it) | 149.0 | Mozilla Firefox (it) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (ja) | 149.0 | Mozilla Firefox (ja) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (ka) | 149.0 | Mozilla Firefox (ka) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (kab) | 149.0 | Mozilla Firefox (kab) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (kk) | 149.0 | Mozilla Firefox (kk) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (km) | 149.0 | Mozilla Firefox (km) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (kn) | 149.0 | Mozilla Firefox (kn) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (ko) | 149.0 | Mozilla Firefox (ko) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (lij) | 149.0 | Mozilla Firefox (lij) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (lt) | 149.0 | Mozilla Firefox (lt) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (lv) | 149.0 | Mozilla Firefox (lv) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (mk) | 149.0 | Mozilla Firefox (mk) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (mr) | 149.0 | Mozilla Firefox (mr) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (ms) | 149.0 | Mozilla Firefox (ms) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (my) | 149.0 | Mozilla Firefox (my) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (nb-NO) | 149.0 | Mozilla Firefox (nb-NO) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (ne-NP) | 149.0 | Mozilla Firefox (ne-NP) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (nl) | 149.0 | Mozilla Firefox (nl) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (nn-NO) | 149.0 | Mozilla Firefox (nn-NO) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (oc) | 149.0 | Mozilla Firefox (oc) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (pa-IN) | 149.0 | Mozilla Firefox (pa-IN) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (pl) | 149.0 | Mozilla Firefox (pl) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (pt-BR) | 149.0 | Mozilla Firefox (pt-BR) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (pt-PT) | 149.0 | Mozilla Firefox (pt-PT) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (rm) | 149.0 | Mozilla Firefox (rm) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (ro) | 149.0 | Mozilla Firefox (ro) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (ru) | 149.0 | Mozilla Firefox (ru) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (sc) | 149.0 | Mozilla Firefox (sc) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (sco) | 149.0 | Mozilla Firefox (sco) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (si) | 149.0 | Mozilla Firefox (si) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (sk) | 149.0 | Mozilla Firefox (sk) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (sl) | 149.0 | Mozilla Firefox (sl) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (son) | 149.0 | Mozilla Firefox (son) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (sq) | 149.0 | Mozilla Firefox (sq) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (sr) | 149.0 | Mozilla Firefox (sr) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (sv-SE) | 149.0 | Mozilla Firefox (sv-SE) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (szl) | 149.0 | Mozilla Firefox (szl) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (ta) | 149.0 | Mozilla Firefox (ta) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (te) | 149.0 | Mozilla Firefox (te) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (tg) | 149.0 | Mozilla Firefox (tg) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (th) | 149.0 | Mozilla Firefox (th) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (tl) | 149.0 | Mozilla Firefox (tl) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (tr) | 149.0 | Mozilla Firefox (tr) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (trs) | 149.0 | Mozilla Firefox (trs) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (uk) | 149.0 | Mozilla Firefox (uk) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (ur) | 149.0 | Mozilla Firefox (ur) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (uz) | 149.0 | Mozilla Firefox (uz) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (vi) | 149.0 | Mozilla Firefox (vi) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (xh) | 149.0 | Mozilla Firefox (xh) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (zh-CN) | 149.0 | Mozilla Firefox (zh-CN) 149.0 | Mar 24, 2026 |
| Mozilla Firefox (zh-TW) | 149.0 | Mozilla Firefox (zh-TW) 149.0 | Mar 24, 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 |
| macOS | |||
| Mozilla Firefox | 150.0.2 | Mozilla Firefox 150.0.2 | May 6, 2026 |
| Linux | |||
| MozillaFirefox · opensuse-leap 15.6 | 140.9.0-150200.152.225.1 | SUSE-SU-2026:1126-1 | Mar 27, 2026 |
| MozillaFirefox · opensuse-leap 16.0 | 140.9.0-160000.1.1 | OPENSUSE-SU-2026:20439-1 | Mar 27, 2026 |
| MozillaFirefox · sles 15.6 | 140.9.0-150200.152.225.1 | SUSE-SU-2026:1126-1 | Mar 27, 2026 |
| MozillaFirefox · sles 15.7 | 140.9.0-150200.152.225.1 | SUSE-SU-2026:1126-1 | Mar 27, 2026 |
| MozillaFirefox · sles 16.0 | 140.9.0-160000.1.1 | SUSE-SU-2026:20978-1 | Mar 27, 2026 |
| MozillaThunderbird · opensuse-leap 15.6 | 140.9.0-150200.8.263.1 | SUSE-SU-2026:1163-1 | Apr 1, 2026 |
| firefox · RHEL 10 | 140.9.0-1.el10_0 | RHSA-2026:7843 | Apr 15, 2026 |
| firefox · RHEL 8 | 0:140.9.0-1.el8_10 | RHSA-2026:5932 | Apr 15, 2026 |
| firefox · RHEL 9 | 0:140.9.0-1.el9_7 | RHSA-2026:5930 | Apr 15, 2026 |
| firefox · almalinux 10 | 140.9.0-1.el10_1 | ALSA-2026:5931 | Mar 26, 2026 |
| firefox · almalinux 8 | 140.9.0-1.el8_10.alma.1 | ALSA-2026:5932 | Mar 26, 2026 |
| firefox · almalinux 9 | 140.9.0-1.el9_7.alma.1 | ALSA-2026:5930 | Mar 26, 2026 |
| firefox · amzn 2023 | 140.9.0-1.amzn2023.0.2 | ALAS2023-2026-1554 | Apr 13, 2026 |
| firefox · ol 10 | 0:140.9.0-1.0.1.el10_1 | ELSA-2026-5931 | Mar 27, 2026 |
| firefox · ol 8 | 0:140.9.0-1.0.1.el8_10 | ELSA-2026-5932 | Mar 27, 2026 |
| firefox · ol 9 | 0:140.9.0-1.0.1.el9_7 | ELSA-2026-5930 | Mar 27, 2026 |
| firefox · rocky 10 | 0:140.9.0-1.el10_1 | RLSA-2026:5931 | Apr 9, 2026 |
| firefox · rocky 8 | 0:140.9.0-1.el8_10 | RLSA-2026:5932 | Apr 7, 2026 |
| firefox · rocky 9 | 0:140.9.0-1.el9_7 | RLSA-2026:5930 | Apr 7, 2026 |
| firefox-debuginfo · amzn 2023 | 140.9.0-1.amzn2023.0.2 | ALAS2023-2026-1554 | Apr 13, 2026 |
| firefox-debugsource · amzn 2023 | 140.9.0-1.amzn2023.0.2 | ALAS2023-2026-1554 | Apr 13, 2026 |
| firefox-esr · Debian 12.15 (bookworm) | 140.9.0esr-1~deb12u1 | DEBIAN-CVE-2026-4697 | Mar 24, 2026 |
| firefox-esr · Debian 13.5 (trixie) | 140.9.0esr-1~deb13u1 | DEBIAN-CVE-2026-4697 | Mar 24, 2026 |
| firefox-esr · Debian 14 | 140.9.0esr-1 | DEBIAN-CVE-2026-4697 | Mar 24, 2026 |
| firefox-x11 · RHEL 9 | 0:140.9.0-1.el9_7 | RHSA-2026:5930 | Apr 15, 2026 |
| firefox-x11 · almalinux 9 | 140.9.0-1.el9_7.alma.1 | ALSA-2026:5930 | Mar 26, 2026 |
| firefox-x11 · ol 9 | 0:140.9.0-1.0.1.el9_7 | ELSA-2026-5930 | Mar 27, 2026 |
| thunderbird · Debian 12.15 (bookworm) | 1:140.9.0esr-1~deb12u1 | DEBIAN-CVE-2026-4697 | Mar 24, 2026 |
| thunderbird · Debian 13.5 (trixie) | 1:140.9.0esr-1~deb13u1 | DEBIAN-CVE-2026-4697 | Mar 24, 2026 |
| thunderbird · Debian 14 | 1:140.9.0esr-1 | DEBIAN-CVE-2026-4697 | Mar 24, 2026 |
| thunderbird · RHEL 10 | 140.9.0-1.el10_0 | RHSA-2026:8315 | Apr 15, 2026 |
| thunderbird · RHEL 8 | 0:140.9.0-1.el8_10 | RHSA-2026:6917 | Apr 15, 2026 |
| thunderbird · RHEL 9 | 0:140.9.0-1.el9_7 | RHSA-2026:6188 | Apr 15, 2026 |
| thunderbird · almalinux 10 | 140.9.0-1.el10_1.alma.1 | ALSA-2026:6342 | Apr 1, 2026 |
| thunderbird · almalinux 8 | 140.9.0-1.el8_10.alma.1 | ALSA-2026:6917 | Apr 7, 2026 |
| thunderbird · almalinux 9 | 140.9.0-1.el9_7.alma.1 | ALSA-2026:6188 | Mar 30, 2026 |
| thunderbird · ol 10 | 0:140.9.0-1.0.1.el10_1 | ELSA-2026-6342 | Apr 1, 2026 |
| thunderbird · ol 8 | 0:140.9.0-1.0.1.el8_10 | ELSA-2026-6917 | Apr 7, 2026 |
| thunderbird · ol 9 | 0:140.9.0-1.0.1.el9_7 | ELSA-2026-6188 | Mar 30, 2026 |
| thunderbird · rocky 10 | 0:140.9.0-1.el10_1 | RLSA-2026:6342 | Apr 9, 2026 |
| thunderbird · rocky 8 | 0:140.9.0-1.el8_10 | RLSA-2026:6917 | Apr 12, 2026 |
| thunderbird · rocky 9 | 0:140.9.0-1.el9_7 | RLSA-2026:6188 | Apr 7, 2026 |
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