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.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.3%
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-2026-12299Medium· 5.4JIT miscompilation in the DOM: Core & HTML component
CVE-2026-12298Medium· 5.4Memory safety bug fixed in Firefox 152
CVE-2026-74943Critical· 9.8Use-after-free in the Graphics: ImageLib component
CVE-2026-74936Critical· 9.8Use-after-free in the JavaScript: WebAssembly component
CVE-2022-26485High· 8.8Removing an XSLT parameter during processing could have lead to an exploitable use-after-free
CVE-2024-9680Critical· 9.8An attacker was able to achieve code execution in the content process by exploiting a use-after-free in Animation timelines