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CVE PROGRAM SOURCE RECORD8.8 High

CVE-2026-84131

Privilege escalation due to invalid pointer in the Graphics component

Description

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, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Mozilla Firefox

  • 115.40 to ≤ 115.*unaffected
  • 140.15 to ≤ 140.*unaffected
  • 153.2 to ≤ 153.*unaffected
  • 155 to ≤ *unaffected

Mozilla Thunderbird

  • 140.15 to ≤ 140.*unaffected
  • 153.2 to ≤ 153.*unaffected
  • 155 to ≤ *unaffected

References