CVE-2025-1943

Memory safety bugs fixed in Firefox 136 and Thunderbird 136

CVE-2025-1943 is fixed in 344 products on 2 platforms, first by Firefox Developer Edition (ach) 136.0, released February 21, 2025. It is not reported as exploited. Patch Radar priority: High.

HighFixed on 2 platforms
CVSS
8.2
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0043
37th percentile

Memory safety bugs present in Firefox 135 and Thunderbird 135. 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 136 and Thunderbird 136.

Where it's fixed

ProductFixed inFixReleased
Windows apps
Firefox Developer Edition (ach) 136.0 Firefox Developer Edition (ach) 136.0 Feb 21, 2025
Firefox Developer Edition (af) 136.0 Firefox Developer Edition (af) 136.0 Feb 21, 2025
Firefox Developer Edition (an) 136.0 Firefox Developer Edition (an) 136.0 Feb 21, 2025
Firefox Developer Edition (ar) 136.0 Firefox Developer Edition (ar) 136.0 Feb 21, 2025
Firefox Developer Edition (ast) 136.0 Firefox Developer Edition (ast) 136.0 Feb 21, 2025
Firefox Developer Edition (az) 136.0 Firefox Developer Edition (az) 136.0 Feb 21, 2025
Firefox Developer Edition (be) 136.0 Firefox Developer Edition (be) 136.0 Feb 21, 2025
Firefox Developer Edition (bg) 136.0 Firefox Developer Edition (bg) 136.0 Feb 21, 2025
Firefox Developer Edition (bn) 136.0 Firefox Developer Edition (bn) 136.0 Feb 21, 2025
Firefox Developer Edition (br) 136.0 Firefox Developer Edition (br) 136.0 Feb 21, 2025
Firefox Developer Edition (bs) 136.0 Firefox Developer Edition (bs) 136.0 Feb 21, 2025
Firefox Developer Edition (ca) 136.0 Firefox Developer Edition (ca) 136.0 Feb 21, 2025
Firefox Developer Edition (ca-valencia) 136.0 Firefox Developer Edition (ca-valencia) 136.0 Feb 21, 2025
Firefox Developer Edition (cak) 136.0 Firefox Developer Edition (cak) 136.0 Feb 21, 2025
Firefox Developer Edition (cs) 136.0 Firefox Developer Edition (cs) 136.0 Feb 21, 2025
Firefox Developer Edition (cy) 136.0 Firefox Developer Edition (cy) 136.0 Feb 21, 2025
Firefox Developer Edition (da) 136.0 Firefox Developer Edition (da) 136.0 Feb 21, 2025
Firefox Developer Edition (de) 136.0 Firefox Developer Edition (de) 136.0 Feb 21, 2025
Firefox Developer Edition (dsb) 136.0 Firefox Developer Edition (dsb) 136.0 Feb 21, 2025
Firefox Developer Edition (el) 136.0 Firefox Developer Edition (el) 136.0 Feb 21, 2025
Firefox Developer Edition (en-CA) 136.0 Firefox Developer Edition (en-CA) 136.0 Feb 21, 2025
Firefox Developer Edition (en-GB) 136.0 Firefox Developer Edition (en-GB) 136.0 Feb 21, 2025
Firefox Developer Edition (en-US) 136.0 Firefox Developer Edition (en-US) 136.0 Feb 21, 2025
Firefox Developer Edition (eo) 136.0 Firefox Developer Edition (eo) 136.0 Feb 21, 2025
Firefox Developer Edition (es-AR) 136.0 Firefox Developer Edition (es-AR) 136.0 Feb 21, 2025
Firefox Developer Edition (es-CL) 136.0 Firefox Developer Edition (es-CL) 136.0 Feb 21, 2025
Firefox Developer Edition (es-ES) 136.0 Firefox Developer Edition (es-ES) 136.0 Feb 21, 2025
Firefox Developer Edition (es-MX) 136.0 Firefox Developer Edition (es-MX) 136.0 Feb 21, 2025
Firefox Developer Edition (et) 136.0 Firefox Developer Edition (et) 136.0 Feb 21, 2025
Firefox Developer Edition (eu) 136.0 Firefox Developer Edition (eu) 136.0 Feb 21, 2025
Firefox Developer Edition (fa) 136.0 Firefox Developer Edition (fa) 136.0 Feb 21, 2025
Firefox Developer Edition (ff) 136.0 Firefox Developer Edition (ff) 136.0 Feb 21, 2025
Firefox Developer Edition (fi) 136.0 Firefox Developer Edition (fi) 136.0 Feb 21, 2025
Firefox Developer Edition (fr) 136.0 Firefox Developer Edition (fr) 136.0 Feb 21, 2025
Firefox Developer Edition (fur) 136.0 Firefox Developer Edition (fur) 136.0 Feb 21, 2025
Firefox Developer Edition (fy-NL) 136.0 Firefox Developer Edition (fy-NL) 136.0 Feb 21, 2025
Firefox Developer Edition (ga-IE) 136.0 Firefox Developer Edition (ga-IE) 136.0 Feb 21, 2025
Firefox Developer Edition (gd) 136.0 Firefox Developer Edition (gd) 136.0 Feb 21, 2025
Firefox Developer Edition (gl) 136.0 Firefox Developer Edition (gl) 136.0 Feb 21, 2025
Firefox Developer Edition (gn) 136.0 Firefox Developer Edition (gn) 136.0 Feb 21, 2025
Firefox Developer Edition (gu-IN) 136.0 Firefox Developer Edition (gu-IN) 136.0 Feb 21, 2025
Firefox Developer Edition (he) 136.0 Firefox Developer Edition (he) 136.0 Feb 21, 2025
Firefox Developer Edition (hi-IN) 136.0 Firefox Developer Edition (hi-IN) 136.0 Feb 21, 2025
Firefox Developer Edition (hr) 136.0 Firefox Developer Edition (hr) 136.0 Feb 21, 2025
Firefox Developer Edition (hsb) 136.0 Firefox Developer Edition (hsb) 136.0 Feb 21, 2025
Firefox Developer Edition (hu) 136.0 Firefox Developer Edition (hu) 136.0 Feb 21, 2025
Firefox Developer Edition (hy-AM) 136.0 Firefox Developer Edition (hy-AM) 136.0 Feb 21, 2025
Firefox Developer Edition (ia) 136.0 Firefox Developer Edition (ia) 136.0 Feb 21, 2025
Firefox Developer Edition (id) 136.0 Firefox Developer Edition (id) 136.0 Feb 21, 2025
Firefox Developer Edition (is) 136.0 Firefox Developer Edition (is) 136.0 Feb 21, 2025
Firefox Developer Edition (it) 136.0 Firefox Developer Edition (it) 136.0 Feb 21, 2025
Firefox Developer Edition (ja) 136.0 Firefox Developer Edition (ja) 136.0 Feb 21, 2025
Firefox Developer Edition (ka) 136.0 Firefox Developer Edition (ka) 136.0 Feb 21, 2025
Firefox Developer Edition (kab) 136.0 Firefox Developer Edition (kab) 136.0 Feb 21, 2025
Firefox Developer Edition (kk) 136.0 Firefox Developer Edition (kk) 136.0 Feb 21, 2025
Firefox Developer Edition (km) 136.0 Firefox Developer Edition (km) 136.0 Feb 21, 2025
Firefox Developer Edition (kn) 136.0 Firefox Developer Edition (kn) 136.0 Feb 21, 2025
Firefox Developer Edition (ko) 136.0 Firefox Developer Edition (ko) 136.0 Feb 21, 2025
Firefox Developer Edition (lij) 136.0 Firefox Developer Edition (lij) 136.0 Feb 21, 2025
Firefox Developer Edition (lt) 136.0 Firefox Developer Edition (lt) 136.0 Feb 21, 2025
Firefox Developer Edition (lv) 136.0 Firefox Developer Edition (lv) 136.0 Feb 21, 2025
Firefox Developer Edition (mk) 136.0 Firefox Developer Edition (mk) 136.0 Feb 21, 2025
Firefox Developer Edition (mr) 136.0 Firefox Developer Edition (mr) 136.0 Feb 21, 2025
Firefox Developer Edition (ms) 136.0 Firefox Developer Edition (ms) 136.0 Feb 21, 2025
Firefox Developer Edition (my) 136.0 Firefox Developer Edition (my) 136.0 Feb 21, 2025
Firefox Developer Edition (nb-NO) 136.0 Firefox Developer Edition (nb-NO) 136.0 Feb 21, 2025
Firefox Developer Edition (ne-NP) 136.0 Firefox Developer Edition (ne-NP) 136.0 Feb 21, 2025
Firefox Developer Edition (nl) 136.0 Firefox Developer Edition (nl) 136.0 Feb 21, 2025
Firefox Developer Edition (nn-NO) 136.0 Firefox Developer Edition (nn-NO) 136.0 Feb 21, 2025
Firefox Developer Edition (oc) 136.0 Firefox Developer Edition (oc) 136.0 Feb 21, 2025
Firefox Developer Edition (pa-IN) 136.0 Firefox Developer Edition (pa-IN) 136.0 Feb 21, 2025
Firefox Developer Edition (pl) 136.0 Firefox Developer Edition (pl) 136.0 Feb 21, 2025
Firefox Developer Edition (pt-BR) 136.0 Firefox Developer Edition (pt-BR) 136.0 Feb 21, 2025
Firefox Developer Edition (pt-PT) 136.0 Firefox Developer Edition (pt-PT) 136.0 Feb 21, 2025
Firefox Developer Edition (rm) 136.0 Firefox Developer Edition (rm) 136.0 Feb 21, 2025
Firefox Developer Edition (ro) 136.0 Firefox Developer Edition (ro) 136.0 Feb 21, 2025
Firefox Developer Edition (ru) 136.0 Firefox Developer Edition (ru) 136.0 Feb 21, 2025
Firefox Developer Edition (sc) 136.0 Firefox Developer Edition (sc) 136.0 Feb 21, 2025
Firefox Developer Edition (sco) 136.0 Firefox Developer Edition (sco) 136.0 Feb 21, 2025
Firefox Developer Edition (si) 136.0 Firefox Developer Edition (si) 136.0 Feb 21, 2025
Firefox Developer Edition (sk) 136.0 Firefox Developer Edition (sk) 136.0 Feb 21, 2025
Firefox Developer Edition (sl) 136.0 Firefox Developer Edition (sl) 136.0 Feb 21, 2025
Firefox Developer Edition (son) 136.0 Firefox Developer Edition (son) 136.0 Feb 21, 2025
Firefox Developer Edition (sq) 136.0 Firefox Developer Edition (sq) 136.0 Feb 21, 2025
Firefox Developer Edition (sr) 136.0 Firefox Developer Edition (sr) 136.0 Feb 21, 2025
Firefox Developer Edition (sv-SE) 136.0 Firefox Developer Edition (sv-SE) 136.0 Feb 21, 2025
Firefox Developer Edition (szl) 136.0 Firefox Developer Edition (szl) 136.0 Feb 21, 2025
Firefox Developer Edition (ta) 136.0 Firefox Developer Edition (ta) 136.0 Feb 21, 2025
Firefox Developer Edition (te) 136.0 Firefox Developer Edition (te) 136.0 Feb 21, 2025
Firefox Developer Edition (tg) 136.0 Firefox Developer Edition (tg) 136.0 Feb 21, 2025
Firefox Developer Edition (th) 136.0 Firefox Developer Edition (th) 136.0 Feb 21, 2025
Firefox Developer Edition (tl) 136.0 Firefox Developer Edition (tl) 136.0 Feb 21, 2025
Firefox Developer Edition (tr) 136.0 Firefox Developer Edition (tr) 136.0 Feb 21, 2025
Firefox Developer Edition (trs) 136.0 Firefox Developer Edition (trs) 136.0 Feb 21, 2025
Firefox Developer Edition (uk) 136.0 Firefox Developer Edition (uk) 136.0 Feb 21, 2025
Firefox Developer Edition (ur) 136.0 Firefox Developer Edition (ur) 136.0 Feb 21, 2025
Firefox Developer Edition (uz) 136.0 Firefox Developer Edition (uz) 136.0 Feb 21, 2025
Firefox Developer Edition (vi) 136.0 Firefox Developer Edition (vi) 136.0 Feb 21, 2025
Firefox Developer Edition (xh) 136.0 Firefox Developer Edition (xh) 136.0 Feb 21, 2025
Firefox Developer Edition (zh-CN) 136.0 Firefox Developer Edition (zh-CN) 136.0 Feb 21, 2025
Firefox Developer Edition (zh-TW) 136.0 Firefox Developer Edition (zh-TW) 136.0 Feb 21, 2025
Mozilla Firefox (en-US) 136.0 Mozilla Firefox (en-US) 136.0 Mar 4, 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
Mozilla Thunderbird (af) 136.0 Mozilla Thunderbird (af) 136.0 Mar 4, 2025
Mozilla Thunderbird (ar) 136.0 Mozilla Thunderbird (ar) 136.0 Mar 4, 2025
Mozilla Thunderbird (ast) 136.0 Mozilla Thunderbird (ast) 136.0 Mar 4, 2025
Mozilla Thunderbird (be) 136.0 Mozilla Thunderbird (be) 136.0 Mar 4, 2025
Mozilla Thunderbird (bg) 136.0 Mozilla Thunderbird (bg) 136.0 Mar 4, 2025
Mozilla Thunderbird (br) 136.0 Mozilla Thunderbird (br) 136.0 Mar 4, 2025
Mozilla Thunderbird (ca) 136.0 Mozilla Thunderbird (ca) 136.0 Mar 4, 2025
Mozilla Thunderbird (cs) 136.0 Mozilla Thunderbird (cs) 136.0 Mar 4, 2025
Mozilla Thunderbird (cy) 136.0 Mozilla Thunderbird (cy) 136.0 Mar 4, 2025
Mozilla Thunderbird (da) 136.0 Mozilla Thunderbird (da) 136.0 Mar 4, 2025
Mozilla Thunderbird (de) 136.0 Mozilla Thunderbird (de) 136.0 Mar 4, 2025
Mozilla Thunderbird (dsb) 136.0 Mozilla Thunderbird (dsb) 136.0 Mar 4, 2025
Mozilla Thunderbird (el) 136.0 Mozilla Thunderbird (el) 136.0 Mar 4, 2025
Mozilla Thunderbird (en-CA) 136.0 Mozilla Thunderbird (en-CA) 136.0 Mar 4, 2025
Mozilla Thunderbird (en-GB) 136.0 Mozilla Thunderbird (en-GB) 136.0 Mar 4, 2025
Mozilla Thunderbird (en-US) 136.0 Mozilla Thunderbird (en-US) 136.0 Mar 4, 2025
Mozilla Thunderbird (es-AR) 136.0 Mozilla Thunderbird (es-AR) 136.0 Mar 4, 2025
Mozilla Thunderbird (es-ES) 136.0 Mozilla Thunderbird (es-ES) 136.0 Mar 4, 2025
Mozilla Thunderbird (es-MX) 136.0 Mozilla Thunderbird (es-MX) 136.0 Mar 4, 2025
Mozilla Thunderbird (et) 136.0 Mozilla Thunderbird (et) 136.0 Mar 4, 2025
Mozilla Thunderbird (eu) 136.0 Mozilla Thunderbird (eu) 136.0 Mar 4, 2025
Mozilla Thunderbird (fi) 136.0 Mozilla Thunderbird (fi) 136.0 Mar 4, 2025
Mozilla Thunderbird (fr) 136.0 Mozilla Thunderbird (fr) 136.0 Mar 4, 2025
Mozilla Thunderbird (fy-NL) 136.0 Mozilla Thunderbird (fy-NL) 136.0 Mar 4, 2025
Mozilla Thunderbird (ga-IE) 136.0 Mozilla Thunderbird (ga-IE) 136.0 Mar 4, 2025
Mozilla Thunderbird (gd) 136.0 Mozilla Thunderbird (gd) 136.0 Mar 4, 2025
Mozilla Thunderbird (gl) 136.0 Mozilla Thunderbird (gl) 136.0 Mar 4, 2025
Mozilla Thunderbird (he) 136.0 Mozilla Thunderbird (he) 136.0 Mar 4, 2025
Mozilla Thunderbird (hr) 136.0 Mozilla Thunderbird (hr) 136.0 Mar 4, 2025
Mozilla Thunderbird (hsb) 136.0 Mozilla Thunderbird (hsb) 136.0 Mar 4, 2025
Mozilla Thunderbird (hu) 136.0 Mozilla Thunderbird (hu) 136.0 Mar 4, 2025
Mozilla Thunderbird (hy-AM) 136.0 Mozilla Thunderbird (hy-AM) 136.0 Mar 4, 2025
Mozilla Thunderbird (id) 136.0 Mozilla Thunderbird (id) 136.0 Mar 4, 2025
Mozilla Thunderbird (is) 136.0 Mozilla Thunderbird (is) 136.0 Mar 4, 2025
Mozilla Thunderbird (it) 136.0 Mozilla Thunderbird (it) 136.0 Mar 4, 2025
Mozilla Thunderbird (ja) 136.0 Mozilla Thunderbird (ja) 136.0 Mar 4, 2025
Mozilla Thunderbird (ka) 136.0 Mozilla Thunderbird (ka) 136.0 Mar 4, 2025
Mozilla Thunderbird (kab) 136.0 Mozilla Thunderbird (kab) 136.0 Mar 4, 2025
Mozilla Thunderbird (kk) 136.0 Mozilla Thunderbird (kk) 136.0 Mar 4, 2025
Mozilla Thunderbird (ko) 136.0 Mozilla Thunderbird (ko) 136.0 Mar 4, 2025
Mozilla Thunderbird (lt) 136.0 Mozilla Thunderbird (lt) 136.0 Mar 4, 2025
Mozilla Thunderbird (lv) 136.0 Mozilla Thunderbird (lv) 136.0 Mar 4, 2025
Mozilla Thunderbird (ms) 136.0 Mozilla Thunderbird (ms) 136.0 Mar 4, 2025
Mozilla Thunderbird (nb-NO) 136.0 Mozilla Thunderbird (nb-NO) 136.0 Mar 4, 2025
Mozilla Thunderbird (nl) 136.0 Mozilla Thunderbird (nl) 136.0 Mar 4, 2025
Mozilla Thunderbird (nn-NO) 136.0 Mozilla Thunderbird (nn-NO) 136.0 Mar 4, 2025
Mozilla Thunderbird (pa-IN) 136.0 Mozilla Thunderbird (pa-IN) 136.0 Mar 4, 2025
Mozilla Thunderbird (pl) 136.0 Mozilla Thunderbird (pl) 136.0 Mar 4, 2025
Mozilla Thunderbird (pt-BR) 136.0 Mozilla Thunderbird (pt-BR) 136.0 Mar 4, 2025
Mozilla Thunderbird (pt-PT) 136.0 Mozilla Thunderbird (pt-PT) 136.0 Mar 4, 2025
Mozilla Thunderbird (rm) 136.0 Mozilla Thunderbird (rm) 136.0 Mar 4, 2025
Mozilla Thunderbird (ro) 136.0 Mozilla Thunderbird (ro) 136.0 Mar 4, 2025
Mozilla Thunderbird (ru) 136.0 Mozilla Thunderbird (ru) 136.0 Mar 4, 2025
Mozilla Thunderbird (sk) 136.0 Mozilla Thunderbird (sk) 136.0 Mar 4, 2025
Mozilla Thunderbird (sl) 136.0 Mozilla Thunderbird (sl) 136.0 Mar 4, 2025
Mozilla Thunderbird (sq) 136.0 Mozilla Thunderbird (sq) 136.0 Mar 4, 2025
Mozilla Thunderbird (sr) 136.0 Mozilla Thunderbird (sr) 136.0 Mar 4, 2025
Mozilla Thunderbird (sv-SE) 136.0 Mozilla Thunderbird (sv-SE) 136.0 Mar 4, 2025
Mozilla Thunderbird (th) 136.0 Mozilla Thunderbird (th) 136.0 Mar 4, 2025
Mozilla Thunderbird (tr) 136.0 Mozilla Thunderbird (tr) 136.0 Mar 4, 2025
Mozilla Thunderbird (uk) 136.0 Mozilla Thunderbird (uk) 136.0 Mar 4, 2025
Mozilla Thunderbird (uz) 136.0 Mozilla Thunderbird (uz) 136.0 Mar 4, 2025
Mozilla Thunderbird (vi) 136.0 Mozilla Thunderbird (vi) 136.0 Mar 4, 2025
Mozilla Thunderbird (zh-CN) 136.0 Mozilla Thunderbird (zh-CN) 136.0 Mar 4, 2025
Mozilla Thunderbird (zh-TW) 136.0 Mozilla Thunderbird (zh-TW) 136.0 Mar 4, 2025
Mozilla Thunderbird ESR (af) 140.1.1 Mozilla Thunderbird ESR (af) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (ar) 140.1.1 Mozilla Thunderbird ESR (ar) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (ast) 140.1.1 Mozilla Thunderbird ESR (ast) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (be) 140.1.1 Mozilla Thunderbird ESR (be) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (bg) 140.1.1 Mozilla Thunderbird ESR (bg) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (br) 140.1.1 Mozilla Thunderbird ESR (br) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (ca) 140.1.1 Mozilla Thunderbird ESR (ca) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (cak) 140.1.1 Mozilla Thunderbird ESR (cak) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (cs) 140.1.1 Mozilla Thunderbird ESR (cs) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (cy) 140.1.1 Mozilla Thunderbird ESR (cy) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (da) 140.1.1 Mozilla Thunderbird ESR (da) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (de) 140.1.1 Mozilla Thunderbird ESR (de) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (dsb) 140.1.1 Mozilla Thunderbird ESR (dsb) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (el) 140.1.1 Mozilla Thunderbird ESR (el) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (en-CA) 140.1.1 Mozilla Thunderbird ESR (en-CA) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (en-GB) 140.1.1 Mozilla Thunderbird ESR (en-GB) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (en-US) 140.1.1 Mozilla Thunderbird ESR (en-US) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (es-AR) 140.1.1 Mozilla Thunderbird ESR (es-AR) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (es-ES) 140.1.1 Mozilla Thunderbird ESR (es-ES) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (es-MX) 140.1.1 Mozilla Thunderbird ESR (es-MX) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (et) 140.1.1 Mozilla Thunderbird ESR (et) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (eu) 140.1.1 Mozilla Thunderbird ESR (eu) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (fi) 140.1.1 Mozilla Thunderbird ESR (fi) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (fr) 140.1.1 Mozilla Thunderbird ESR (fr) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (fy-NL) 140.1.1 Mozilla Thunderbird ESR (fy-NL) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (ga-IE) 140.1.1 Mozilla Thunderbird ESR (ga-IE) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (gd) 140.1.1 Mozilla Thunderbird ESR (gd) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (gl) 140.1.1 Mozilla Thunderbird ESR (gl) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (he) 140.1.1 Mozilla Thunderbird ESR (he) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (hr) 140.1.1 Mozilla Thunderbird ESR (hr) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (hsb) 140.1.1 Mozilla Thunderbird ESR (hsb) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (hu) 140.1.1 Mozilla Thunderbird ESR (hu) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (hy-AM) 140.1.1 Mozilla Thunderbird ESR (hy-AM) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (id) 140.1.1 Mozilla Thunderbird ESR (id) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (is) 140.1.1 Mozilla Thunderbird ESR (is) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (it) 140.1.1 Mozilla Thunderbird ESR (it) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (ja) 140.1.1 Mozilla Thunderbird ESR (ja) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (ka) 140.1.1 Mozilla Thunderbird ESR (ka) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (kab) 140.1.1 Mozilla Thunderbird ESR (kab) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (kk) 140.1.1 Mozilla Thunderbird ESR (kk) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (ko) 140.1.1 Mozilla Thunderbird ESR (ko) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (lt) 140.1.1 Mozilla Thunderbird ESR (lt) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (lv) 140.1.1 Mozilla Thunderbird ESR (lv) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (ms) 140.1.1 Mozilla Thunderbird ESR (ms) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (nb-NO) 140.1.1 Mozilla Thunderbird ESR (nb-NO) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (nl) 140.1.1 Mozilla Thunderbird ESR (nl) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (nn-NO) 140.1.1 Mozilla Thunderbird ESR (nn-NO) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (pa-IN) 140.1.1 Mozilla Thunderbird ESR (pa-IN) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (pl) 140.1.1 Mozilla Thunderbird ESR (pl) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (pt-BR) 140.1.1 Mozilla Thunderbird ESR (pt-BR) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (pt-PT) 140.1.1 Mozilla Thunderbird ESR (pt-PT) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (rm) 140.1.1 Mozilla Thunderbird ESR (rm) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (ro) 140.1.1 Mozilla Thunderbird ESR (ro) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (ru) 140.1.1 Mozilla Thunderbird ESR (ru) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (sk) 140.1.1 Mozilla Thunderbird ESR (sk) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (sl) 140.1.1 Mozilla Thunderbird ESR (sl) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (sq) 140.1.1 Mozilla Thunderbird ESR (sq) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (sr) 140.1.1 Mozilla Thunderbird ESR (sr) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (sv-SE) 140.1.1 Mozilla Thunderbird ESR (sv-SE) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (th) 140.1.1 Mozilla Thunderbird ESR (th) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (tr) 140.1.1 Mozilla Thunderbird ESR (tr) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (uk) 140.1.1 Mozilla Thunderbird ESR (uk) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (uz) 140.1.1 Mozilla Thunderbird ESR (uz) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (vi) 140.1.1 Mozilla Thunderbird ESR (vi) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (zh-CN) 140.1.1 Mozilla Thunderbird ESR (zh-CN) 140.1.1 Aug 5, 2025
Mozilla Thunderbird ESR (zh-TW) 140.1.1 Mozilla Thunderbird ESR (zh-TW) 140.1.1 Aug 5, 2025
Linux
firefox · Ubuntu 20.04 LTS (focal) 136.0+build3-0ubuntu0.20.04.1 firefox 136.0+build3-0ubuntu0.20.04.1 Mar 4, 2025
firefox-geckodriver · Ubuntu 20.04 LTS (focal) 136.0+build3-0ubuntu0.20.04.1 firefox-geckodriver 136.0+build3-0ubuntu0.20.04.1 Mar 4, 2025
firefox-mozsymbols · Ubuntu 20.04 LTS (focal) 136.0+build3-0ubuntu0.20.04.1 firefox-mozsymbols 136.0+build3-0ubuntu0.20.04.1 Mar 4, 2025
thunderbird · Ubuntu 22.04.1 LTS (jammy) 1:140.7.1+build1-0ubuntu0.22.04.1 thunderbird 1:140.7.1+build1-0ubuntu0.22.04.1 Jan 28, 2026
thunderbird-gnome-support · Ubuntu 22.04.1 LTS (jammy) 1:140.7.1+build1-0ubuntu0.22.04.1 thunderbird-gnome-support 1:140.7.1+build1-0ubuntu0.22.04.1 Jan 28, 2026
thunderbird-mozsymbols · Ubuntu 22.04.1 LTS (jammy) 1:140.7.1+build1-0ubuntu0.22.04.1 thunderbird-mozsymbols 1:140.7.1+build1-0ubuntu0.22.04.1 Jan 28, 2026
xul-ext-calendar-timezones · Ubuntu 22.04.1 LTS (jammy) 1:140.7.1+build1-0ubuntu0.22.04.1 xul-ext-calendar-timezones 1:140.7.1+build1-0ubuntu0.22.04.1 Jan 28, 2026
xul-ext-gdata-provider · Ubuntu 22.04.1 LTS (jammy) 1:140.7.1+build1-0ubuntu0.22.04.1 xul-ext-gdata-provider 1:140.7.1+build1-0ubuntu0.22.04.1 Jan 28, 2026
xul-ext-lightning · Ubuntu 22.04.1 LTS (jammy) 1:140.7.1+build1-0ubuntu0.22.04.1 xul-ext-lightning 1:140.7.1+build1-0ubuntu0.22.04.1 Jan 28, 2026

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