CVE-2026-0879

Summary

Sandbox escape due to incorrect boundary conditions in the Graphics component. This vulnerability was fixed in Firefox 147, Firefox ESR 115.32, Firefox ESR 140.7, Thunderbird 147, and Thunderbird 140.7.

Affected Software

VendorProductVersion RangeStatus
MozillaFirefox115.32 <= 115.*unaffected
MozillaFirefox140.7 <= 140.*unaffected
MozillaFirefox147 <= *unaffected
MozillaThunderbird140.7 <= 140.*unaffected
MozillaThunderbird147 <= *unaffected

Weaknesses

ADP Enrichment

CISA ADP Vulnrichment

  • SSVC:
  • Exploitation: none
    • Automatable: yes
    • Technical Impact: total

firefox: thunderbird: Sandbox escape due to incorrect boundary conditions in the Graphics component

Additional References

References