CVE-2025-1011High· 8.8▾ TwilightA bug in WebAssembly code generation could have lead to a crash. It may have been possible for an attacker to leverage this to achieve code execution. This vulnerability was fixed in Firefox 135, Firefox ESR 128.7, Thunderbird 128.7, and…
▾ Twilight zone — High severity, or a signal on a lesser flaw
impact 48.4 · likelihood 0.1 · exploitation 0
Need a working PoC? Pro members can cast a request and our team develops one — it lands right here.
Disclosure to exploitation, from the record and what we observed since indexing it.
Disclosed via NVD
Last analysed / modified upstream
0.6%
A bug in WebAssembly code generation could have lead to a crash. It may have been possible for an attacker to leverage this to achieve code execution. This vulnerability was fixed in Firefox 135, Firefox ESR 128.7, Thunderbird 128.7, and Thunderbird 135.
firefox < 128.7.0firefox < 135.0thunderbird < 135.0thunderbird >= 128.0.1, < 128.7.0Upgrade past the affected range:
firefox 135.0thunderbird 128.7.0Connected by shared product, vendor, weakness, or advisory.
CVE-2026-8094Critical· 9.8Other issue in the WebRTC component
CVE-2026-96869Medium· 4.3Information disclosure in the Networking component
CVE-2026-100832High· 8.8Use-after-free in the Graphics: Canvas2D component
CVE-2026-100831High· 8.8Use-after-free in the DOM: UI Events & Focus Handling component
CVE-2026-100830NoneMitigation bypass in the DOM: Navigation component
CVE-2026-100829NoneMitigation bypass in the DOM: Security component