CVE-2026-124918 · Runtime
NO FIX YET · SEE WHAT TO DO
A boundary-condition error in Firefox's WebRender graphics component can let code gain higher privileges than it should have. The description says it is fixed in Firefox 160 and Firefox ESR 153.7.
first public Nov 10, 2026 · 1 source
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Anyone running Firefox builds older than 160 on the main channel or older than 153.7 on ESR. Exposure depends on the browser being used on untrusted content; the sources do not say whether specific configurations are safer.
Not affected if fully-updated-browser
Who cares desktop-browser, firefox
firefox --version; versions below 160 on the main channel or below 153.7 on ESR are affected.160 (main release)153.7Privilege escalation due to incorrect boundary conditions in the Graphics: WebRender component. This vulnerability was fixed in Firefox 160 and Firefox ESR 153.7.
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