CVE-2025-5263

Error handling for script execution was incorrectly isolated from web content

CVE-2025-5263 is fixed in 318 products on 2 platforms, first by Firefox Developer Edition (ach) 139.0, released May 18, 2025. It is not reported as exploited. Patch Radar priority: High.

HighFixed on 2 platforms
CVSS
8.8
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0027
18th percentile

Error handling for script execution was incorrectly isolated from web content, which could have allowed cross-origin leak attacks. This vulnerability was fixed in Firefox 139, Firefox ESR 115.24, Firefox ESR 128.11, Thunderbird 139, and Thunderbird 128.11.

Where it's fixed

ProductFixed inFixReleased
Windows apps
Firefox Developer Edition (ach) 139.0 Firefox Developer Edition (ach) 139.0 May 18, 2025
Firefox Developer Edition (af) 139.0 Firefox Developer Edition (af) 139.0 May 18, 2025
Firefox Developer Edition (an) 139.0 Firefox Developer Edition (an) 139.0 May 18, 2025
Firefox Developer Edition (ar) 139.0 Firefox Developer Edition (ar) 139.0 May 18, 2025
Firefox Developer Edition (ast) 139.0 Firefox Developer Edition (ast) 139.0 May 18, 2025
Firefox Developer Edition (az) 139.0 Firefox Developer Edition (az) 139.0 May 18, 2025
Firefox Developer Edition (be) 139.0 Firefox Developer Edition (be) 139.0 May 18, 2025
Firefox Developer Edition (bg) 139.0 Firefox Developer Edition (bg) 139.0 May 18, 2025
Firefox Developer Edition (bn) 139.0 Firefox Developer Edition (bn) 139.0 May 18, 2025
Firefox Developer Edition (br) 139.0 Firefox Developer Edition (br) 139.0 May 18, 2025
Firefox Developer Edition (bs) 139.0 Firefox Developer Edition (bs) 139.0 May 18, 2025
Firefox Developer Edition (ca) 139.0 Firefox Developer Edition (ca) 139.0 May 18, 2025
Firefox Developer Edition (ca-valencia) 139.0 Firefox Developer Edition (ca-valencia) 139.0 May 18, 2025
Firefox Developer Edition (cak) 139.0 Firefox Developer Edition (cak) 139.0 May 18, 2025
Firefox Developer Edition (cs) 139.0 Firefox Developer Edition (cs) 139.0 May 18, 2025
Firefox Developer Edition (cy) 139.0 Firefox Developer Edition (cy) 139.0 May 18, 2025
Firefox Developer Edition (da) 139.0 Firefox Developer Edition (da) 139.0 May 18, 2025
Firefox Developer Edition (de) 139.0 Firefox Developer Edition (de) 139.0 May 18, 2025
Firefox Developer Edition (dsb) 139.0 Firefox Developer Edition (dsb) 139.0 May 18, 2025
Firefox Developer Edition (el) 139.0 Firefox Developer Edition (el) 139.0 May 18, 2025
Firefox Developer Edition (en-CA) 139.0 Firefox Developer Edition (en-CA) 139.0 May 18, 2025
Firefox Developer Edition (en-GB) 139.0 Firefox Developer Edition (en-GB) 139.0 May 18, 2025
Firefox Developer Edition (en-US) 139.0 Firefox Developer Edition (en-US) 139.0 May 18, 2025
Firefox Developer Edition (eo) 139.0 Firefox Developer Edition (eo) 139.0 May 18, 2025
Firefox Developer Edition (es-AR) 139.0 Firefox Developer Edition (es-AR) 139.0 May 18, 2025
Firefox Developer Edition (es-CL) 139.0 Firefox Developer Edition (es-CL) 139.0 May 18, 2025
Firefox Developer Edition (es-ES) 139.0 Firefox Developer Edition (es-ES) 139.0 May 18, 2025
Firefox Developer Edition (es-MX) 139.0 Firefox Developer Edition (es-MX) 139.0 May 18, 2025
Firefox Developer Edition (et) 139.0 Firefox Developer Edition (et) 139.0 May 18, 2025
Firefox Developer Edition (eu) 139.0 Firefox Developer Edition (eu) 139.0 May 18, 2025
Firefox Developer Edition (fa) 139.0 Firefox Developer Edition (fa) 139.0 May 18, 2025
Firefox Developer Edition (ff) 139.0 Firefox Developer Edition (ff) 139.0 May 18, 2025
Firefox Developer Edition (fi) 139.0 Firefox Developer Edition (fi) 139.0 May 18, 2025
Firefox Developer Edition (fr) 139.0 Firefox Developer Edition (fr) 139.0 May 18, 2025
Firefox Developer Edition (fur) 139.0 Firefox Developer Edition (fur) 139.0 May 18, 2025
Firefox Developer Edition (fy-NL) 139.0 Firefox Developer Edition (fy-NL) 139.0 May 18, 2025
Firefox Developer Edition (ga-IE) 139.0 Firefox Developer Edition (ga-IE) 139.0 May 18, 2025
Firefox Developer Edition (gd) 139.0 Firefox Developer Edition (gd) 139.0 May 18, 2025
Firefox Developer Edition (gl) 139.0 Firefox Developer Edition (gl) 139.0 May 18, 2025
Firefox Developer Edition (gn) 139.0 Firefox Developer Edition (gn) 139.0 May 18, 2025
Firefox Developer Edition (gu-IN) 139.0 Firefox Developer Edition (gu-IN) 139.0 May 18, 2025
Firefox Developer Edition (he) 139.0 Firefox Developer Edition (he) 139.0 May 18, 2025
Firefox Developer Edition (hi-IN) 139.0 Firefox Developer Edition (hi-IN) 139.0 May 18, 2025
Firefox Developer Edition (hr) 139.0 Firefox Developer Edition (hr) 139.0 May 18, 2025
Firefox Developer Edition (hsb) 139.0 Firefox Developer Edition (hsb) 139.0 May 18, 2025
Firefox Developer Edition (hu) 139.0 Firefox Developer Edition (hu) 139.0 May 18, 2025
Firefox Developer Edition (hy-AM) 139.0 Firefox Developer Edition (hy-AM) 139.0 May 18, 2025
Firefox Developer Edition (ia) 139.0 Firefox Developer Edition (ia) 139.0 May 18, 2025
Firefox Developer Edition (id) 139.0 Firefox Developer Edition (id) 139.0 May 18, 2025
Firefox Developer Edition (is) 139.0 Firefox Developer Edition (is) 139.0 May 18, 2025
Firefox Developer Edition (it) 139.0 Firefox Developer Edition (it) 139.0 May 18, 2025
Firefox Developer Edition (ja) 139.0 Firefox Developer Edition (ja) 139.0 May 18, 2025
Firefox Developer Edition (ka) 139.0 Firefox Developer Edition (ka) 139.0 May 18, 2025
Firefox Developer Edition (kab) 139.0 Firefox Developer Edition (kab) 139.0 May 18, 2025
Firefox Developer Edition (kk) 139.0 Firefox Developer Edition (kk) 139.0 May 18, 2025
Firefox Developer Edition (km) 139.0 Firefox Developer Edition (km) 139.0 May 18, 2025
Firefox Developer Edition (kn) 139.0 Firefox Developer Edition (kn) 139.0 May 18, 2025
Firefox Developer Edition (ko) 139.0 Firefox Developer Edition (ko) 139.0 May 18, 2025
Firefox Developer Edition (lij) 139.0 Firefox Developer Edition (lij) 139.0 May 18, 2025
Firefox Developer Edition (lt) 139.0 Firefox Developer Edition (lt) 139.0 May 18, 2025
Firefox Developer Edition (lv) 139.0 Firefox Developer Edition (lv) 139.0 May 18, 2025
Firefox Developer Edition (mk) 139.0 Firefox Developer Edition (mk) 139.0 May 18, 2025
Firefox Developer Edition (mr) 139.0 Firefox Developer Edition (mr) 139.0 May 18, 2025
Firefox Developer Edition (ms) 139.0 Firefox Developer Edition (ms) 139.0 May 18, 2025
Firefox Developer Edition (my) 139.0 Firefox Developer Edition (my) 139.0 May 18, 2025
Firefox Developer Edition (nb-NO) 139.0 Firefox Developer Edition (nb-NO) 139.0 May 18, 2025
Firefox Developer Edition (ne-NP) 139.0 Firefox Developer Edition (ne-NP) 139.0 May 18, 2025
Firefox Developer Edition (nl) 139.0 Firefox Developer Edition (nl) 139.0 May 18, 2025
Firefox Developer Edition (nn-NO) 139.0 Firefox Developer Edition (nn-NO) 139.0 May 18, 2025
Firefox Developer Edition (oc) 139.0 Firefox Developer Edition (oc) 139.0 May 18, 2025
Firefox Developer Edition (pa-IN) 139.0 Firefox Developer Edition (pa-IN) 139.0 May 18, 2025
Firefox Developer Edition (pl) 139.0 Firefox Developer Edition (pl) 139.0 May 18, 2025
Firefox Developer Edition (pt-BR) 139.0 Firefox Developer Edition (pt-BR) 139.0 May 18, 2025
Firefox Developer Edition (pt-PT) 139.0 Firefox Developer Edition (pt-PT) 139.0 May 18, 2025
Firefox Developer Edition (rm) 139.0 Firefox Developer Edition (rm) 139.0 May 18, 2025
Firefox Developer Edition (ro) 139.0 Firefox Developer Edition (ro) 139.0 May 18, 2025
Firefox Developer Edition (ru) 139.0 Firefox Developer Edition (ru) 139.0 May 18, 2025
Firefox Developer Edition (sc) 139.0 Firefox Developer Edition (sc) 139.0 May 18, 2025
Firefox Developer Edition (sco) 139.0 Firefox Developer Edition (sco) 139.0 May 18, 2025
Firefox Developer Edition (si) 139.0 Firefox Developer Edition (si) 139.0 May 18, 2025
Firefox Developer Edition (sk) 139.0 Firefox Developer Edition (sk) 139.0 May 18, 2025
Firefox Developer Edition (sl) 139.0 Firefox Developer Edition (sl) 139.0 May 18, 2025
Firefox Developer Edition (son) 139.0 Firefox Developer Edition (son) 139.0 May 18, 2025
Firefox Developer Edition (sq) 139.0 Firefox Developer Edition (sq) 139.0 May 18, 2025
Firefox Developer Edition (sr) 139.0 Firefox Developer Edition (sr) 139.0 May 18, 2025
Firefox Developer Edition (sv-SE) 139.0 Firefox Developer Edition (sv-SE) 139.0 May 18, 2025
Firefox Developer Edition (szl) 139.0 Firefox Developer Edition (szl) 139.0 May 18, 2025
Firefox Developer Edition (ta) 139.0 Firefox Developer Edition (ta) 139.0 May 18, 2025
Firefox Developer Edition (te) 139.0 Firefox Developer Edition (te) 139.0 May 18, 2025
Firefox Developer Edition (tg) 139.0 Firefox Developer Edition (tg) 139.0 May 18, 2025
Firefox Developer Edition (th) 139.0 Firefox Developer Edition (th) 139.0 May 18, 2025
Firefox Developer Edition (tl) 139.0 Firefox Developer Edition (tl) 139.0 May 18, 2025
Firefox Developer Edition (tr) 139.0 Firefox Developer Edition (tr) 139.0 May 18, 2025
Firefox Developer Edition (trs) 139.0 Firefox Developer Edition (trs) 139.0 May 18, 2025
Firefox Developer Edition (uk) 139.0 Firefox Developer Edition (uk) 139.0 May 18, 2025
Firefox Developer Edition (ur) 139.0 Firefox Developer Edition (ur) 139.0 May 18, 2025
Firefox Developer Edition (uz) 139.0 Firefox Developer Edition (uz) 139.0 May 18, 2025
Firefox Developer Edition (vi) 139.0 Firefox Developer Edition (vi) 139.0 May 18, 2025
Firefox Developer Edition (xh) 139.0 Firefox Developer Edition (xh) 139.0 May 18, 2025
Firefox Developer Edition (zh-CN) 139.0 Firefox Developer Edition (zh-CN) 139.0 May 18, 2025
Firefox Developer Edition (zh-TW) 139.0 Firefox Developer Edition (zh-TW) 139.0 May 18, 2025
Mozilla Firefox (ach) 139.0 Mozilla Firefox (ach) 139.0 May 27, 2025
Mozilla Firefox (af) 139.0 Mozilla Firefox (af) 139.0 May 27, 2025
Mozilla Firefox (an) 139.0 Mozilla Firefox (an) 139.0 May 27, 2025
Mozilla Firefox (ar) 139.0 Mozilla Firefox (ar) 139.0 May 27, 2025
Mozilla Firefox (ast) 139.0 Mozilla Firefox (ast) 139.0 May 27, 2025
Mozilla Firefox (az) 139.0 Mozilla Firefox (az) 139.0 May 27, 2025
Mozilla Firefox (be) 139.0 Mozilla Firefox (be) 139.0 May 27, 2025
Mozilla Firefox (bg) 139.0 Mozilla Firefox (bg) 139.0 May 27, 2025
Mozilla Firefox (bn) 139.0 Mozilla Firefox (bn) 139.0 May 27, 2025
Mozilla Firefox (br) 139.0 Mozilla Firefox (br) 139.0 May 27, 2025
Mozilla Firefox (bs) 139.0 Mozilla Firefox (bs) 139.0 May 27, 2025
Mozilla Firefox (ca) 139.0 Mozilla Firefox (ca) 139.0 May 27, 2025
Mozilla Firefox (ca-valencia) 139.0 Mozilla Firefox (ca-valencia) 139.0 May 27, 2025
Mozilla Firefox (cak) 139.0 Mozilla Firefox (cak) 139.0 May 27, 2025
Mozilla Firefox (cs) 139.0 Mozilla Firefox (cs) 139.0 May 27, 2025
Mozilla Firefox (cy) 139.0 Mozilla Firefox (cy) 139.0 May 27, 2025
Mozilla Firefox (da) 139.0 Mozilla Firefox (da) 139.0 May 27, 2025
Mozilla Firefox (de) 139.0 Mozilla Firefox (de) 139.0 May 27, 2025
Mozilla Firefox (dsb) 139.0 Mozilla Firefox (dsb) 139.0 May 27, 2025
Mozilla Firefox (el) 139.0 Mozilla Firefox (el) 139.0 May 27, 2025
Mozilla Firefox (en-CA) 139.0 Mozilla Firefox (en-CA) 139.0 May 27, 2025
Mozilla Firefox (en-GB) 139.0 Mozilla Firefox (en-GB) 139.0 May 27, 2025
Mozilla Firefox (en-US) 139.0 Mozilla Firefox (en-US) 139.0 May 27, 2025
Mozilla Firefox (eo) 139.0 Mozilla Firefox (eo) 139.0 May 27, 2025
Mozilla Firefox (es-AR) 139.0 Mozilla Firefox (es-AR) 139.0 May 27, 2025
Mozilla Firefox (es-CL) 139.0 Mozilla Firefox (es-CL) 139.0 May 27, 2025
Mozilla Firefox (es-ES) 139.0 Mozilla Firefox (es-ES) 139.0 May 27, 2025
Mozilla Firefox (es-MX) 139.0 Mozilla Firefox (es-MX) 139.0 May 27, 2025
Mozilla Firefox (et) 139.0 Mozilla Firefox (et) 139.0 May 27, 2025
Mozilla Firefox (eu) 139.0 Mozilla Firefox (eu) 139.0 May 27, 2025
Mozilla Firefox (fa) 139.0 Mozilla Firefox (fa) 139.0 May 27, 2025
Mozilla Firefox (ff) 139.0 Mozilla Firefox (ff) 139.0 May 27, 2025
Mozilla Firefox (fi) 139.0 Mozilla Firefox (fi) 139.0 May 27, 2025
Mozilla Firefox (fr) 139.0 Mozilla Firefox (fr) 139.0 May 27, 2025
Mozilla Firefox (fur) 139.0 Mozilla Firefox (fur) 139.0 May 27, 2025
Mozilla Firefox (fy-NL) 139.0 Mozilla Firefox (fy-NL) 139.0 May 27, 2025
Mozilla Firefox (ga-IE) 139.0 Mozilla Firefox (ga-IE) 139.0 May 27, 2025
Mozilla Firefox (gd) 139.0 Mozilla Firefox (gd) 139.0 May 27, 2025
Mozilla Firefox (gl) 139.0 Mozilla Firefox (gl) 139.0 May 27, 2025
Mozilla Firefox (gn) 139.0 Mozilla Firefox (gn) 139.0 May 27, 2025
Mozilla Firefox (gu-IN) 139.0 Mozilla Firefox (gu-IN) 139.0 May 27, 2025
Mozilla Firefox (he) 139.0 Mozilla Firefox (he) 139.0 May 27, 2025
Mozilla Firefox (hi-IN) 139.0 Mozilla Firefox (hi-IN) 139.0 May 27, 2025
Mozilla Firefox (hr) 139.0 Mozilla Firefox (hr) 139.0 May 27, 2025
Mozilla Firefox (hsb) 139.0 Mozilla Firefox (hsb) 139.0 May 27, 2025
Mozilla Firefox (hu) 139.0 Mozilla Firefox (hu) 139.0 May 27, 2025
Mozilla Firefox (hy-AM) 139.0 Mozilla Firefox (hy-AM) 139.0 May 27, 2025
Mozilla Firefox (ia) 139.0 Mozilla Firefox (ia) 139.0 May 27, 2025
Mozilla Firefox (id) 139.0 Mozilla Firefox (id) 139.0 May 27, 2025
Mozilla Firefox (is) 139.0 Mozilla Firefox (is) 139.0 May 27, 2025
Mozilla Firefox (it) 139.0 Mozilla Firefox (it) 139.0 May 27, 2025
Mozilla Firefox (ja) 139.0 Mozilla Firefox (ja) 139.0 May 27, 2025
Mozilla Firefox (ka) 139.0 Mozilla Firefox (ka) 139.0 May 27, 2025
Mozilla Firefox (kab) 139.0 Mozilla Firefox (kab) 139.0 May 27, 2025
Mozilla Firefox (kk) 139.0 Mozilla Firefox (kk) 139.0 May 27, 2025
Mozilla Firefox (km) 139.0 Mozilla Firefox (km) 139.0 May 27, 2025
Mozilla Firefox (kn) 139.0 Mozilla Firefox (kn) 139.0 May 27, 2025
Mozilla Firefox (ko) 139.0 Mozilla Firefox (ko) 139.0 May 27, 2025
Mozilla Firefox (lij) 139.0 Mozilla Firefox (lij) 139.0 May 27, 2025
Mozilla Firefox (lt) 139.0 Mozilla Firefox (lt) 139.0 May 27, 2025
Mozilla Firefox (lv) 139.0 Mozilla Firefox (lv) 139.0 May 27, 2025
Mozilla Firefox (mk) 139.0 Mozilla Firefox (mk) 139.0 May 27, 2025
Mozilla Firefox (mr) 139.0 Mozilla Firefox (mr) 139.0 May 27, 2025
Mozilla Firefox (ms) 139.0 Mozilla Firefox (ms) 139.0 May 27, 2025
Mozilla Firefox (my) 139.0 Mozilla Firefox (my) 139.0 May 27, 2025
Mozilla Firefox (nb-NO) 139.0 Mozilla Firefox (nb-NO) 139.0 May 27, 2025
Mozilla Firefox (ne-NP) 139.0 Mozilla Firefox (ne-NP) 139.0 May 27, 2025
Mozilla Firefox (nl) 139.0 Mozilla Firefox (nl) 139.0 May 27, 2025
Mozilla Firefox (nn-NO) 139.0 Mozilla Firefox (nn-NO) 139.0 May 27, 2025
Mozilla Firefox (oc) 139.0 Mozilla Firefox (oc) 139.0 May 27, 2025
Mozilla Firefox (pa-IN) 139.0 Mozilla Firefox (pa-IN) 139.0 May 27, 2025
Mozilla Firefox (pl) 139.0 Mozilla Firefox (pl) 139.0 May 27, 2025
Mozilla Firefox (pt-BR) 139.0 Mozilla Firefox (pt-BR) 139.0 May 27, 2025
Mozilla Firefox (pt-PT) 139.0 Mozilla Firefox (pt-PT) 139.0 May 27, 2025
Mozilla Firefox (rm) 139.0 Mozilla Firefox (rm) 139.0 May 27, 2025
Mozilla Firefox (ro) 139.0 Mozilla Firefox (ro) 139.0 May 27, 2025
Mozilla Firefox (ru) 139.0 Mozilla Firefox (ru) 139.0 May 27, 2025
Mozilla Firefox (sc) 139.0 Mozilla Firefox (sc) 139.0 May 27, 2025
Mozilla Firefox (sco) 139.0 Mozilla Firefox (sco) 139.0 May 27, 2025
Mozilla Firefox (si) 139.0 Mozilla Firefox (si) 139.0 May 27, 2025
Mozilla Firefox (sk) 139.0 Mozilla Firefox (sk) 139.0 May 27, 2025
Mozilla Firefox (sl) 139.0 Mozilla Firefox (sl) 139.0 May 27, 2025
Mozilla Firefox (son) 139.0 Mozilla Firefox (son) 139.0 May 27, 2025
Mozilla Firefox (sq) 139.0 Mozilla Firefox (sq) 139.0 May 27, 2025
Mozilla Firefox (sr) 139.0 Mozilla Firefox (sr) 139.0 May 27, 2025
Mozilla Firefox (sv-SE) 139.0 Mozilla Firefox (sv-SE) 139.0 May 27, 2025
Mozilla Firefox (szl) 139.0 Mozilla Firefox (szl) 139.0 May 27, 2025
Mozilla Firefox (ta) 139.0 Mozilla Firefox (ta) 139.0 May 27, 2025
Mozilla Firefox (te) 139.0 Mozilla Firefox (te) 139.0 May 27, 2025
Mozilla Firefox (tg) 139.0 Mozilla Firefox (tg) 139.0 May 27, 2025
Mozilla Firefox (th) 139.0 Mozilla Firefox (th) 139.0 May 27, 2025
Mozilla Firefox (tl) 139.0 Mozilla Firefox (tl) 139.0 May 27, 2025
Mozilla Firefox (tr) 139.0 Mozilla Firefox (tr) 139.0 May 27, 2025
Mozilla Firefox (trs) 139.0 Mozilla Firefox (trs) 139.0 May 27, 2025
Mozilla Firefox (uk) 139.0 Mozilla Firefox (uk) 139.0 May 27, 2025
Mozilla Firefox (ur) 139.0 Mozilla Firefox (ur) 139.0 May 27, 2025
Mozilla Firefox (uz) 139.0 Mozilla Firefox (uz) 139.0 May 27, 2025
Mozilla Firefox (vi) 139.0 Mozilla Firefox (vi) 139.0 May 27, 2025
Mozilla Firefox (xh) 139.0 Mozilla Firefox (xh) 139.0 May 27, 2025
Mozilla Firefox (zh-CN) 139.0 Mozilla Firefox (zh-CN) 139.0 May 27, 2025
Mozilla Firefox (zh-TW) 139.0 Mozilla Firefox (zh-TW) 139.0 May 27, 2025
Mozilla Firefox ESR (ach) 140.3.0 Mozilla Firefox ESR (ach) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (af) 140.3.0 Mozilla Firefox ESR (af) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (an) 140.3.0 Mozilla Firefox ESR (an) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (ar) 140.3.0 Mozilla Firefox ESR (ar) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (ast) 140.3.0 Mozilla Firefox ESR (ast) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (az) 140.3.0 Mozilla Firefox ESR (az) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (be) 140.3.0 Mozilla Firefox ESR (be) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (bg) 140.3.0 Mozilla Firefox ESR (bg) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (bn) 140.3.0 Mozilla Firefox ESR (bn) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (br) 140.3.0 Mozilla Firefox ESR (br) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (bs) 140.3.0 Mozilla Firefox ESR (bs) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (ca) 140.3.0 Mozilla Firefox ESR (ca) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (ca-valencia) 140.3.0 Mozilla Firefox ESR (ca-valencia) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (cak) 140.3.0 Mozilla Firefox ESR (cak) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (cs) 140.3.0 Mozilla Firefox ESR (cs) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (cy) 140.3.0 Mozilla Firefox ESR (cy) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (da) 140.3.0 Mozilla Firefox ESR (da) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (de) 140.3.0 Mozilla Firefox ESR (de) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (dsb) 140.3.0 Mozilla Firefox ESR (dsb) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (el) 140.3.0 Mozilla Firefox ESR (el) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (en-CA) 140.3.0 Mozilla Firefox ESR (en-CA) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (en-GB) 140.3.0 Mozilla Firefox ESR (en-GB) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (en-US) 140.3.0 Mozilla Firefox ESR (en-US) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (eo) 140.3.0 Mozilla Firefox ESR (eo) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (es-AR) 140.3.0 Mozilla Firefox ESR (es-AR) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (es-CL) 140.3.0 Mozilla Firefox ESR (es-CL) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (es-ES) 140.3.0 Mozilla Firefox ESR (es-ES) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (es-MX) 140.3.0 Mozilla Firefox ESR (es-MX) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (et) 140.3.0 Mozilla Firefox ESR (et) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (eu) 140.3.0 Mozilla Firefox ESR (eu) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (fa) 140.3.0 Mozilla Firefox ESR (fa) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (ff) 140.3.0 Mozilla Firefox ESR (ff) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (fi) 140.3.0 Mozilla Firefox ESR (fi) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (fr) 140.3.0 Mozilla Firefox ESR (fr) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (fur) 140.3.0 Mozilla Firefox ESR (fur) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (fy-NL) 140.3.0 Mozilla Firefox ESR (fy-NL) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (ga-IE) 140.3.0 Mozilla Firefox ESR (ga-IE) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (gd) 140.3.0 Mozilla Firefox ESR (gd) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (gl) 140.3.0 Mozilla Firefox ESR (gl) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (gn) 140.3.0 Mozilla Firefox ESR (gn) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (gu-IN) 140.3.0 Mozilla Firefox ESR (gu-IN) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (he) 140.3.0 Mozilla Firefox ESR (he) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (hi-IN) 140.3.0 Mozilla Firefox ESR (hi-IN) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (hr) 140.3.0 Mozilla Firefox ESR (hr) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (hsb) 140.3.0 Mozilla Firefox ESR (hsb) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (hu) 140.3.0 Mozilla Firefox ESR (hu) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (hy-AM) 140.3.0 Mozilla Firefox ESR (hy-AM) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (ia) 140.3.0 Mozilla Firefox ESR (ia) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (id) 140.3.0 Mozilla Firefox ESR (id) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (is) 140.3.0 Mozilla Firefox ESR (is) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (it) 140.3.0 Mozilla Firefox ESR (it) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (ja) 140.3.0 Mozilla Firefox ESR (ja) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (ka) 140.3.0 Mozilla Firefox ESR (ka) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (kab) 140.3.0 Mozilla Firefox ESR (kab) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (kk) 140.3.0 Mozilla Firefox ESR (kk) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (km) 140.3.0 Mozilla Firefox ESR (km) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (kn) 140.3.0 Mozilla Firefox ESR (kn) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (ko) 140.3.0 Mozilla Firefox ESR (ko) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (lij) 140.3.0 Mozilla Firefox ESR (lij) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (lt) 140.3.0 Mozilla Firefox ESR (lt) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (lv) 140.3.0 Mozilla Firefox ESR (lv) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (mk) 140.3.0 Mozilla Firefox ESR (mk) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (mr) 140.3.0 Mozilla Firefox ESR (mr) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (ms) 140.3.0 Mozilla Firefox ESR (ms) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (my) 140.3.0 Mozilla Firefox ESR (my) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (nb-NO) 140.3.0 Mozilla Firefox ESR (nb-NO) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (ne-NP) 140.3.0 Mozilla Firefox ESR (ne-NP) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (nl) 140.3.0 Mozilla Firefox ESR (nl) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (nn-NO) 140.3.0 Mozilla Firefox ESR (nn-NO) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (oc) 140.3.0 Mozilla Firefox ESR (oc) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (pa-IN) 140.3.0 Mozilla Firefox ESR (pa-IN) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (pl) 140.3.0 Mozilla Firefox ESR (pl) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (pt-BR) 140.3.0 Mozilla Firefox ESR (pt-BR) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (pt-PT) 140.3.0 Mozilla Firefox ESR (pt-PT) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (rm) 140.3.0 Mozilla Firefox ESR (rm) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (ro) 140.3.0 Mozilla Firefox ESR (ro) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (ru) 140.3.0 Mozilla Firefox ESR (ru) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (sat) 140.13.0 Mozilla Firefox ESR (sat) 140.13.0 Jul 20, 2026
Mozilla Firefox ESR (sc) 140.3.0 Mozilla Firefox ESR (sc) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (sco) 140.3.0 Mozilla Firefox ESR (sco) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (si) 140.3.0 Mozilla Firefox ESR (si) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (sk) 140.3.0 Mozilla Firefox ESR (sk) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (sl) 140.3.0 Mozilla Firefox ESR (sl) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (son) 140.3.0 Mozilla Firefox ESR (son) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (sq) 140.3.0 Mozilla Firefox ESR (sq) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (sr) 140.3.0 Mozilla Firefox ESR (sr) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (sv-SE) 140.3.0 Mozilla Firefox ESR (sv-SE) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (szl) 140.3.0 Mozilla Firefox ESR (szl) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (ta) 140.3.0 Mozilla Firefox ESR (ta) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (te) 140.3.0 Mozilla Firefox ESR (te) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (tg) 140.3.0 Mozilla Firefox ESR (tg) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (th) 140.3.0 Mozilla Firefox ESR (th) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (tl) 140.3.0 Mozilla Firefox ESR (tl) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (tr) 140.3.0 Mozilla Firefox ESR (tr) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (trs) 140.3.0 Mozilla Firefox ESR (trs) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (uk) 140.3.0 Mozilla Firefox ESR (uk) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (ur) 140.3.0 Mozilla Firefox ESR (ur) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (uz) 140.3.0 Mozilla Firefox ESR (uz) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (vi) 140.3.0 Mozilla Firefox ESR (vi) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (xh) 140.3.0 Mozilla Firefox ESR (xh) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (zh-CN) 140.3.0 Mozilla Firefox ESR (zh-CN) 140.3.0 Sep 16, 2025
Mozilla Firefox ESR (zh-TW) 140.3.0 Mozilla Firefox ESR (zh-TW) 140.3.0 Sep 16, 2025
Linux
MozillaFirefox · opensuse-leap 15.6 128.11.0-150200.152.185.1 SUSE-SU-2025:01814-1 Jun 4, 2025
MozillaFirefox · sles 15.6 128.11.0-150200.152.185.1 SUSE-SU-2025:01814-1 Jun 4, 2025
MozillaFirefox · sles 15.7 128.11.0-150200.152.185.1 SUSE-SU-2025:01814-1 Jun 4, 2025
MozillaThunderbird · opensuse-leap 15.6 128.11.0-150200.8.221.1 SUSE-SU-2025:01946-1 Jun 13, 2025
MozillaThunderbird · sles 15.6 128.11.0-150200.8.221.1 SUSE-SU-2025:01946-1 Jun 13, 2025
MozillaThunderbird · sles 15.7 128.11.0-150200.8.221.1 SUSE-SU-2025:01946-1 Jun 13, 2025
firefox · RHEL 10 128.11.0-1.el10_0 RHSA-2025:8341 May 27, 2025
firefox · RHEL 8 0:128.11.0-1.el8_10 RHSA-2025:8308 May 29, 2025
firefox · RHEL 9 0:128.11.0-1.el9_6 RHSA-2025:8293 May 29, 2025
firefox · almalinux 10 128.11.0-1.el10_0 ALSA-2025:8341 Jun 2, 2025
firefox · almalinux 8 128.11.0-1.el8_10.alma.1 ALSA-2025:8308 May 29, 2025
firefox · almalinux 9 128.11.0-1.el9_6.alma.1 ALSA-2025:8293 May 29, 2025
firefox · amzn 2023 128.11.0-1.amzn2023.0.2 ALAS2023-2025-996 Jun 4, 2025
firefox · ol 10 0:128.11.0-1.0.1.el10_0 ELSA-2025-8341 Jun 27, 2025
firefox · ol 8 0:128.11.0-1.0.1.el8_10 ELSA-2025-8308 May 29, 2025
firefox · ol 9 0:128.11.0-1.0.1.el9_6 ELSA-2025-8293 May 29, 2025
firefox · rocky 10 0:128.11.0-1.el10_0 RLSA-2025:8341 Oct 3, 2025
firefox · rocky 8 0:128.11.0-1.el8_10 RLSA-2025:8308 Jul 29, 2025
firefox · rocky 9 0:128.11.0-1.el9_6 RLSA-2025:8293 Oct 4, 2025
firefox-debuginfo · amzn 2023 128.11.0-1.amzn2023.0.2 ALAS2023-2025-996 Jun 4, 2025
firefox-debugsource · amzn 2023 128.11.0-1.amzn2023.0.2 ALAS2023-2025-996 Jun 4, 2025
firefox-esr · Debian 11.6 (bullseye) 128.11.0esr-1~deb11u1 DLA-4191-1 May 29, 2025
firefox-esr · Debian 12.15 (bookworm) 128.11.0esr-1~deb12u1 DSA-5926-1 May 28, 2025
firefox-esr · Debian 13.5 (trixie) 128.11.0esr-1 DEBIAN-CVE-2025-5263 May 27, 2025
firefox-esr · Debian 14 128.11.0esr-1 DEBIAN-CVE-2025-5263 May 27, 2025
firefox-x11 · RHEL 9 0:128.11.0-1.el9_6 RHSA-2025:8293 May 29, 2025
firefox-x11 · almalinux 9 128.11.0-1.el9_6.alma.1 ALSA-2025:8293 May 29, 2025
firefox-x11 · ol 9 0:128.11.0-1.0.1.el9_6 ELSA-2025-8293 May 29, 2025
mozjs128 · opensuse-leap 16.0 128.14.0-160000.1.1 OPENSUSE-SU-2025:20135-1 Dec 3, 2025
mozjs128 · sles 16.0 128.14.0-160000.1.1 SUSE-SU-2025:21170-1 Dec 3, 2025
thunderbird · Debian 12.15 (bookworm) 1:128.11.0esr-1~deb12u1 DEBIAN-CVE-2025-5263 May 27, 2025
thunderbird · Debian 13.5 (trixie) 1:128.11.0esr-1 DEBIAN-CVE-2025-5263 May 27, 2025
thunderbird · Debian 14 1:128.11.0esr-1 DEBIAN-CVE-2025-5263 May 27, 2025
thunderbird · RHEL 10 128.11.0-1.el10_0 RHSA-2025:8608 May 27, 2025
thunderbird · RHEL 8 0:128.11.0-1.el8_10 RHSA-2025:8756 Jun 10, 2025
thunderbird · RHEL 9 0:128.11.0-1.el9_6 RHSA-2025:8607 Jun 5, 2025
thunderbird · Ubuntu 22.04.1 LTS (jammy) 1:128.12.0+build1-0ubuntu0.22.04.1 thunderbird 1:128.12.0+build1-0ubuntu0.22.04.1 Jun 24, 2025
thunderbird · almalinux 10 128.11.0-1.el10_0.alma.1 ALSA-2025:8608 Jun 5, 2025
thunderbird · almalinux 8 128.11.0-1.el8_10.alma.1 ALSA-2025:8756 Jun 10, 2025
thunderbird · almalinux 9 128.11.0-1.el9_6.alma.1 ALSA-2025:8607 Jun 5, 2025
thunderbird · ol 10 0:128.11.0-1.0.1.el10_0 ELSA-2025-8608 Jun 27, 2025
thunderbird · ol 8 0:128.11.0-1.0.1.el8_10 ELSA-2025-8756 Jun 10, 2025
thunderbird · ol 9 0:128.11.0-1.0.1.el9_6 ELSA-2025-8607 Jun 6, 2025
thunderbird · rocky 10 0:128.11.0-1.el10_0 RLSA-2025:8608 Oct 3, 2025
thunderbird · rocky 8 0:128.11.0-1.el8_10 RLSA-2025:8756 Jul 29, 2025
thunderbird · rocky 9 0:128.11.0-1.el9_6 RLSA-2025:8607 Oct 4, 2025
thunderbird-gnome-support · Ubuntu 22.04.1 LTS (jammy) 1:128.12.0+build1-0ubuntu0.22.04.1 thunderbird-gnome-support 1:128.12.0+build1-0ubuntu0.22.04.1 Jun 24, 2025
thunderbird-mozsymbols · Ubuntu 22.04.1 LTS (jammy) 1:128.12.0+build1-0ubuntu0.22.04.1 thunderbird-mozsymbols 1:128.12.0+build1-0ubuntu0.22.04.1 Jun 24, 2025
xul-ext-calendar-timezones · Ubuntu 22.04.1 LTS (jammy) 1:128.12.0+build1-0ubuntu0.22.04.1 xul-ext-calendar-timezones 1:128.12.0+build1-0ubuntu0.22.04.1 Jun 24, 2025
xul-ext-gdata-provider · Ubuntu 22.04.1 LTS (jammy) 1:128.12.0+build1-0ubuntu0.22.04.1 xul-ext-gdata-provider 1:128.12.0+build1-0ubuntu0.22.04.1 Jun 24, 2025
xul-ext-lightning · Ubuntu 22.04.1 LTS (jammy) 1:128.12.0+build1-0ubuntu0.22.04.1 xul-ext-lightning 1:128.12.0+build1-0ubuntu0.22.04.1 Jun 24, 2025

Patch Radar data is free to use with attribution. Terms and how to credit it.

Product names, logos and trademarks shown on Patch Radar belong to their respective owners. They are used only to identify the software each security fix applies to and to help readers find their platform. Their use does not imply any affiliation with, or endorsement by, those owners, and Patchblox is not affiliated with any of them.