{"id":"CVE-2026-109712","title":"Sandbox escape due to uninitialized memory in the Graphics component","summary":"Sandbox escape due to uninitialized memory in the Graphics component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.","severity":"high","cvss":7.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L","cwe":["CWE-908"],"vendor":"Mozilla","product":"Firefox","affected":["Firefox","Thunderbird"],"published":"2026-10-13","updated":"2026-10-16","sourceUpdated":"2026-10-16T19:17:02.980","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-109712","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2068420","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-106/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-107/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-108/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-109/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-110/","label":"security@mozilla.org"}],"tags":["nvd","cve.org"],"epss":0.00224,"epssPercentile":0.12937,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-16T18:07:41.211665Z"},"ingestedAt":"2026-10-13T13:27:03.993Z","slug":"CVE-2026-109712","body":"## Overview\n\nSandbox escape due to uninitialized memory in the Graphics component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, Firefox ESR 153.5, Thunderbird 158, and Thunderbird 153.5.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":39.1,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":223184,"id":"CVE-2026-109712","ts":1792176238276,"field":"cvss","old":null,"new":"7.1"},{"seq":223183,"id":"CVE-2026-109712","ts":1792176238276,"field":"severity","old":"none","new":"high"}]}