CVE-2026-92020 PUBLISHED

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

Assigner: mozilla
Reserved: 15.09.2026 Published: 15.09.2026 Updated: 16.09.2026

Privilege escalation due to incorrect boundary conditions in the Graphics: WebRender component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 140.16.

Product Status

Vendor Mozilla
Product Firefox
Versions
  • unaffected from 115.41 to 115.* (incl.)
  • unaffected from 140.16 to 140.* (incl.)
  • unaffected from 153.3 to 153.* (incl.)
  • unaffected from 156 to * (incl.)
Vendor Mozilla
Product Thunderbird
Versions
  • unaffected from 140.16 to 140.* (incl.)
  • unaffected from 156 to * (incl.)

Credits

  • Rintaro Kawasugi

References