Privilege escalation due to incorrect boundary conditions in the Graphics: WebRender component

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CVE-2026-124918 · CVE overview and exploitation status

cve-program · CVE-2026-124918

• https://bugzilla.mozilla.org/show_bug.cgi?id=2058993
• https://www.mozilla.org/security/advisories/mfsa2026-125/
• https://www.mozilla.org/security/advisories/mfsa2026-127/
• https://www.mozilla.org/security/advisories/mfsa2026-128/
• https://www.mozilla.org/security/advisories/mfsa2026-129/

• Privilege escalation due to incorrect boundary conditions in the Graphics: WebRender component · Affected-version evidence changed · 10 Nov 2026
• Privilege escalation due to incorrect boundary conditions in the Graphics: WebRender component · Affected-version evidence changed · 10 Nov 2026
• Privilege escalation due to incorrect boundary conditions in the Graphics: WebRender component · Newly collected advisory · 10 Nov 2026