CVE-2025-2857
Incorrect handle could lead to sandbox escapes
CVE-2025-2857 is fixed in 204 products on 1 platform, first by Mozilla Firefox (en-US) 136.0.4, released March 4, 2025. It is not reported as exploited. Patch Radar priority: Urgent.
Urgent
CVSS
10.0
No vendor severity
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0198
80th percentile
Following the recent Chrome sandbox escape (CVE-2025-2783), various Firefox developers identified a similar pattern in our IPC code. A compromised child process could cause the parent process to return an unintentionally powerful handle, leading to a sandbox escape. The original vulnerability was being exploited in the wild. *This only affects Firefox on Windows. Other operating systems are unaffected.*. This vulnerability was fixed in Firefox 136.0.4, Firefox ESR 128.8.1, and Firefox ESR 115.21.1.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Firefox Developer Edition (ach) | 137.0 | Firefox Developer Edition (ach) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (af) | 137.0 | Firefox Developer Edition (af) 137.0 | Mar 17, 2025 |
| Firefox Developer Edition (an) | 137.0 | Firefox Developer Edition (an) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (ar) | 137.0 | Firefox Developer Edition (ar) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (ast) | 137.0 | Firefox Developer Edition (ast) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (az) | 137.0 | Firefox Developer Edition (az) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (be) | 137.0 | Firefox Developer Edition (be) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (bg) | 137.0 | Firefox Developer Edition (bg) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (bn) | 137.0 | Firefox Developer Edition (bn) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (br) | 137.0 | Firefox Developer Edition (br) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (bs) | 137.0 | Firefox Developer Edition (bs) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (ca) | 137.0 | Firefox Developer Edition (ca) 137.0 | Mar 19, 2025 |
| Firefox Developer Edition (ca-valencia) | 137.0 | Firefox Developer Edition (ca-valencia) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (cak) | 137.0 | Firefox Developer Edition (cak) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (cs) | 137.0 | Firefox Developer Edition (cs) 137.0 | Mar 19, 2025 |
| Firefox Developer Edition (cy) | 137.0 | Firefox Developer Edition (cy) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (da) | 137.0 | Firefox Developer Edition (da) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (de) | 137.0 | Firefox Developer Edition (de) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (dsb) | 137.0 | Firefox Developer Edition (dsb) 137.0 | Mar 17, 2025 |
| Firefox Developer Edition (el) | 137.0 | Firefox Developer Edition (el) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (en-CA) | 137.0 | Firefox Developer Edition (en-CA) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (en-GB) | 137.0 | Firefox Developer Edition (en-GB) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (en-US) | 137.0 | Firefox Developer Edition (en-US) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (eo) | 137.0 | Firefox Developer Edition (eo) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (es-AR) | 137.0 | Firefox Developer Edition (es-AR) 137.0 | Mar 19, 2025 |
| Firefox Developer Edition (es-CL) | 137.0 | Firefox Developer Edition (es-CL) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (es-ES) | 137.0 | Firefox Developer Edition (es-ES) 137.0 | Mar 19, 2025 |
| Firefox Developer Edition (es-MX) | 137.0 | Firefox Developer Edition (es-MX) 137.0 | Mar 17, 2025 |
| Firefox Developer Edition (et) | 137.0 | Firefox Developer Edition (et) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (eu) | 137.0 | Firefox Developer Edition (eu) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (fa) | 137.0 | Firefox Developer Edition (fa) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (ff) | 137.0 | Firefox Developer Edition (ff) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (fi) | 137.0 | Firefox Developer Edition (fi) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (fr) | 137.0 | Firefox Developer Edition (fr) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (fur) | 137.0 | Firefox Developer Edition (fur) 137.0 | Mar 19, 2025 |
| Firefox Developer Edition (fy-NL) | 137.0 | Firefox Developer Edition (fy-NL) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (ga-IE) | 137.0 | Firefox Developer Edition (ga-IE) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (gd) | 137.0 | Firefox Developer Edition (gd) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (gl) | 137.0 | Firefox Developer Edition (gl) 137.0 | Mar 17, 2025 |
| Firefox Developer Edition (gn) | 137.0 | Firefox Developer Edition (gn) 137.0 | Mar 17, 2025 |
| Firefox Developer Edition (gu-IN) | 137.0 | Firefox Developer Edition (gu-IN) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (he) | 137.0 | Firefox Developer Edition (he) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (hi-IN) | 137.0 | Firefox Developer Edition (hi-IN) 137.0 | Mar 17, 2025 |
| Firefox Developer Edition (hr) | 137.0 | Firefox Developer Edition (hr) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (hsb) | 137.0 | Firefox Developer Edition (hsb) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (hu) | 137.0 | Firefox Developer Edition (hu) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (hy-AM) | 137.0 | Firefox Developer Edition (hy-AM) 137.0 | Mar 19, 2025 |
| Firefox Developer Edition (ia) | 137.0 | Firefox Developer Edition (ia) 137.0 | Mar 19, 2025 |
| Firefox Developer Edition (id) | 137.0 | Firefox Developer Edition (id) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (is) | 137.0 | Firefox Developer Edition (is) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (it) | 137.0 | Firefox Developer Edition (it) 137.0 | Mar 19, 2025 |
| Firefox Developer Edition (ja) | 137.0 | Firefox Developer Edition (ja) 137.0 | Mar 17, 2025 |
| Firefox Developer Edition (ka) | 137.0 | Firefox Developer Edition (ka) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (kab) | 137.0 | Firefox Developer Edition (kab) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (kk) | 137.0 | Firefox Developer Edition (kk) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (km) | 137.0 | Firefox Developer Edition (km) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (kn) | 137.0 | Firefox Developer Edition (kn) 137.0 | Mar 17, 2025 |
| Firefox Developer Edition (ko) | 137.0 | Firefox Developer Edition (ko) 137.0 | Mar 17, 2025 |
| Firefox Developer Edition (lij) | 137.0 | Firefox Developer Edition (lij) 137.0 | Mar 17, 2025 |
| Firefox Developer Edition (lt) | 137.0 | Firefox Developer Edition (lt) 137.0 | Mar 17, 2025 |
| Firefox Developer Edition (lv) | 137.0 | Firefox Developer Edition (lv) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (mk) | 137.0 | Firefox Developer Edition (mk) 137.0 | Mar 19, 2025 |
| Firefox Developer Edition (mr) | 137.0 | Firefox Developer Edition (mr) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (ms) | 137.0 | Firefox Developer Edition (ms) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (my) | 137.0 | Firefox Developer Edition (my) 137.0 | Mar 19, 2025 |
| Firefox Developer Edition (nb-NO) | 137.0 | Firefox Developer Edition (nb-NO) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (ne-NP) | 137.0 | Firefox Developer Edition (ne-NP) 137.0 | Mar 17, 2025 |
| Firefox Developer Edition (nl) | 137.0 | Firefox Developer Edition (nl) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (nn-NO) | 137.0 | Firefox Developer Edition (nn-NO) 137.0 | Mar 19, 2025 |
| Firefox Developer Edition (oc) | 137.0 | Firefox Developer Edition (oc) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (pa-IN) | 137.0 | Firefox Developer Edition (pa-IN) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (pl) | 137.0 | Firefox Developer Edition (pl) 137.0 | Mar 19, 2025 |
| Firefox Developer Edition (pt-BR) | 137.0 | Firefox Developer Edition (pt-BR) 137.0 | Mar 17, 2025 |
| Firefox Developer Edition (pt-PT) | 137.0 | Firefox Developer Edition (pt-PT) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (rm) | 137.0 | Firefox Developer Edition (rm) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (ro) | 137.0 | Firefox Developer Edition (ro) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (ru) | 137.0 | Firefox Developer Edition (ru) 137.0 | Mar 19, 2025 |
| Firefox Developer Edition (sc) | 137.0 | Firefox Developer Edition (sc) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (sco) | 137.0 | Firefox Developer Edition (sco) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (si) | 137.0 | Firefox Developer Edition (si) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (sk) | 137.0 | Firefox Developer Edition (sk) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (sl) | 137.0 | Firefox Developer Edition (sl) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (son) | 137.0 | Firefox Developer Edition (son) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (sq) | 137.0 | Firefox Developer Edition (sq) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (sr) | 137.0 | Firefox Developer Edition (sr) 137.0 | Mar 17, 2025 |
| Firefox Developer Edition (sv-SE) | 137.0 | Firefox Developer Edition (sv-SE) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (szl) | 137.0 | Firefox Developer Edition (szl) 137.0 | Mar 17, 2025 |
| Firefox Developer Edition (ta) | 137.0 | Firefox Developer Edition (ta) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (te) | 137.0 | Firefox Developer Edition (te) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (tg) | 137.0 | Firefox Developer Edition (tg) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (th) | 137.0 | Firefox Developer Edition (th) 137.0 | Mar 19, 2025 |
| Firefox Developer Edition (tl) | 137.0 | Firefox Developer Edition (tl) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (tr) | 137.0 | Firefox Developer Edition (tr) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (trs) | 137.0 | Firefox Developer Edition (trs) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (uk) | 137.0 | Firefox Developer Edition (uk) 137.0 | Mar 17, 2025 |
| Firefox Developer Edition (ur) | 137.0 | Firefox Developer Edition (ur) 137.0 | Mar 19, 2025 |
| Firefox Developer Edition (uz) | 137.0 | Firefox Developer Edition (uz) 137.0 | Mar 17, 2025 |
| Firefox Developer Edition (vi) | 137.0 | Firefox Developer Edition (vi) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (xh) | 137.0 | Firefox Developer Edition (xh) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (zh-CN) | 137.0 | Firefox Developer Edition (zh-CN) 137.0 | Mar 12, 2025 |
| Firefox Developer Edition (zh-TW) | 137.0 | Firefox Developer Edition (zh-TW) 137.0 | Mar 12, 2025 |
| Mozilla Firefox (en-US) | 136.0.4 | Mozilla Firefox (en-US) 136.0.4 | 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 |
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