CVE-2026-0880

Description

Sandbox escape due to integer overflow in the Graphics component. This vulnerability affects Firefox < 147, Firefox ESR < 115.32, Firefox ESR < 140.7, Thunderbird < 147, and Thunderbird < 140.7.

References

https://www.mozilla.org/security/advisories/mfsa2026-05/

https://www.mozilla.org/security/advisories/mfsa2026-04/

https://www.mozilla.org/security/advisories/mfsa2026-03/

https://www.mozilla.org/security/advisories/mfsa2026-02/

https://www.mozilla.org/security/advisories/mfsa2026-01/

https://bugzilla.mozilla.org/show_bug.cgi?id=2005014

Details

Source: Mitre, NVD

Risk Information

CVSS v2

CVSS v3

EPSS