{"id":"CVE-2026-100805","title":"Race condition, use-after-free in the Audio/Video component","summary":"Race condition, use-after-free in the Audio/Video component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H","cwe":["CWE-362","CWE-416","CWE-825"],"vendor":"Mozilla","product":"Firefox","affected":["Firefox"],"published":"2026-09-29","updated":"2026-09-30","sourceUpdated":"2026-09-30T18:18:09.797","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-100805","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2058785","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-101/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-97/","label":"security@mozilla.org"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-100805.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-100805"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2543175"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-100805"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-100805"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-97/#CVE-2026-100805"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"epss":0.00208,"epssPercentile":0.10873,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-29T14:09:34.466424Z"},"ingestedAt":"2026-09-29T13:34:31.671Z","scores":{"nvd":7.5,"vendor":6.1},"slug":"CVE-2026-100805","body":"## Overview\n\nRace condition, use-after-free in the Audio/Video component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · Moderate · updated 2026-10-16 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-100805.json)","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":212711,"id":"CVE-2026-100805","ts":1790692649746,"field":"cvss","old":null,"new":"7.5"},{"seq":212710,"id":"CVE-2026-100805","ts":1790692649746,"field":"severity","old":"none","new":"high"}]}