CVE-2026-124935 · Runtime
NO FIX YET · SEE WHAT TO DO
Firefox's WebRTC networking component contains undefined behavior, meaning the code can act unpredictably when it runs. The sources do not state what an attacker can achieve from it.
first public Nov 10, 2026 · 1 source
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Anyone running Firefox before the fixed versions, since the flaw sits in the browser's WebRTC networking code. Sources do not say whether it needs a specific site, call or setting to trigger.
Not affected if already-on-fixed-version
Who cares firefox, webrtc
about:support in the address bar and compare it against the fixed versions below.160 or later.153.7 or later.Undefined behavior in the WebRTC: Networking component. This vulnerability was fixed in Firefox 160 and Firefox ESR 153.7.
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