CVE-2024-9936
Mozilla Firefox ESR and 4 others: Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
CVE-2024-9936 is fixed in 107 products on 2 platforms, first by firefox 131.0.3+build1-0ubuntu0.20.04.1, released October 14, 2024. It is not reported as exploited. Patch Radar priority: Routine.
RoutineFixed on 2 platforms
CVSS
6.5
Medium
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0027
19th percentile
When manipulating the selection node cache, an attacker may have been able to cause unexpected behavior, potentially leading to an exploitable crash. This vulnerability affects Firefox < 131.0.3.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Windows apps | |||
| Firefox Developer Edition (en-US) | 132.0 | Firefox Developer Edition (en-US) 132.0 | Oct 18, 2024 |
| Mozilla Firefox (en-US) | 131.0.3 | Mozilla Firefox (en-US) 131.0.3 | Oct 15, 2024 |
| 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 | |||
| firefox · Ubuntu 20.04 LTS (focal) | 131.0.3+build1-0ubuntu0.20.04.1 | firefox 131.0.3+build1-0ubuntu0.20.04.1 | Oct 14, 2024 |
| firefox-geckodriver · Ubuntu 20.04 LTS (focal) | 131.0.3+build1-0ubuntu0.20.04.1 | firefox-geckodriver 131.0.3+build1-0ubuntu0.20.04.1 | Oct 14, 2024 |
| firefox-mozsymbols · Ubuntu 20.04 LTS (focal) | 131.0.3+build1-0ubuntu0.20.04.1 | firefox-mozsymbols 131.0.3+build1-0ubuntu0.20.04.1 | Oct 14, 2024 |
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