Firefox Privilege Escalation in Security Component before 151/140.11
CVE-2026-8970 Published on May 19, 2026
Privilege escalation in the Security component
Privilege escalation in the Security component. This vulnerability was fixed in Firefox 151 and Firefox ESR 140.11.
Vulnerability Analysis
CVE-2026-8970 is exploitable with network access, and does not require authorization privileges or 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 low. considered to have a small impact on confidentiality and integrity and availability.
Weakness Type
Improper Privilege Management
The software does not properly assign, modify, track, or check privileges for an actor, creating an unintended sphere of control for that actor.
Products Associated with CVE-2026-8970
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Affected Versions
Mozilla Firefox:- Version 140.11, <= 140.* is unaffected.
- Version 151, <= * is unaffected.