CVE-2026-124919 is a vulnerability in Mozilla Firefox
Published on November 10, 2026
Privilege escalation due to use-after-free in the WebRTC: Networking component
Privilege escalation due to use-after-free in the WebRTC: Networking component. This vulnerability was fixed in Firefox 160 and Firefox ESR 153.7.
Vulnerability Analysis
CVE-2026-124919 can be exploited with network access, requires user interaction. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to be very high.
Weakness Type
What is a Dangling pointer Vulnerability?
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
CVE-2026-124919 has been classified to as a Dangling pointer vulnerability or weakness.
Products Associated with CVE-2026-124919
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Affected Versions
Mozilla Firefox:- Version 153.7, <= 153.* is unaffected.
- Version 160, <= * is unaffected.