CVE-2026-84131 is a vulnerability in Mozilla Firefox
Published on September 1, 2026
Privilege escalation due to invalid pointer in the Graphics component
Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, and Firefox ESR 153.2.
Products Associated with CVE-2026-84131
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Affected Versions
Mozilla Firefox:- Version 115.40, <= 115.* is unaffected.
- Version 140.15, <= 140.* is unaffected.
- Version 153.2, <= 153.* is unaffected.
- Version 155, <= * is unaffected.