CVE-2025-14325High· 7.3▾ MidnightPoC availableJIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 146, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.
▾ Midnight zone — Critical, or high with PoC / in-the-wild
impact 40.2 · likelihood 0.1 · exploitation 12
A public proof-of-concept already exists for this vulnerability — see Exploit availability below.
Public exploit / PoC code seen in 1 source. Availability, not in-the-wild use.
Exploit-prediction probability, daily snapshots since Sep 30.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
0.3%
Last analysed / modified upstream
1 GitHub repo (last check)
JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 146, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.
firefox < 140.6.0firefox < 146.0thunderbird < 140.6.0thunderbird < 146.0Upgrade past the affected range:
firefox 146.0thunderbird 146.0Connected by shared product, vendor, weakness, or advisory.
CVE-2025-14330Critical· 9.8JIT miscompilation in the JavaScript Engine: JIT component
CVE-2025-14321Critical· 9.8Use-after-free in the WebRTC: Signaling component
CVE-2025-14331Medium· 6.5Same-origin policy bypass in the Request Handling component
CVE-2025-14333High· 8.1Memory safety bugs present in Firefox ESR 140.5, Thunderbird ESR 140.5, Firefox 145 and Thunderbird 145
CVE-2025-14328High· 8.8Privilege escalation in the Netmonitor component
CVE-2025-14329High· 8.8Privilege escalation in the Netmonitor component