THREAT OPS › Threat News › [NVD] CVE-2026-0879 (CRITICAL 9.8) — 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.
[NVD] CVE-2026-0879 (CRITICAL 9.8) — 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.
CVE-2026-0879 CVSS: 9.8 CRITICAL Published: 2026-01-13T14:16:38.463
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.
Indicators of compromise
- CVE-2026-0879cve
Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-0879