{"id":"CVE-2026-92063","title":"Denial-of-service in the Audio/Video component","summary":"Denial-of-service in the Audio/Video component. This vulnerability was fixed in Firefox 156 and Thunderbird 156.","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H","cwe":["CWE-770"],"vendor":"Mozilla","product":"Firefox","affected":["Firefox","Thunderbird"],"published":"2026-09-15","updated":"2026-09-20","sourceUpdated":"2026-09-20T01:16:37.127","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-92063","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2055737","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-90/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-94/","label":"security@mozilla.org"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92063.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-92063"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2533745"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-92063"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92063"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-90/#CVE-2026-92063"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-94/#CVE-2026-92063"}],"tags":["nvd","cve.org","csaf","vex","red-hat","score-dispute"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-20T00:24:36.202047Z"},"epss":0.00224,"epssPercentile":0.13255,"scores":{"nvd":6.5,"vendor":3.4,"adp":6.5},"ingestedAt":"2026-09-15T12:36:50.179Z","slug":"CVE-2026-92063","body":"## Overview\n\nDenial-of-service in the Audio/Video component. This vulnerability was fixed in Firefox 156 and Thunderbird 156.\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** · Low · updated 2026-09-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92063.json)","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":207889,"id":"CVE-2026-92063","ts":1789870390607,"field":"cvss","old":"3.4","new":"6.5"},{"seq":207888,"id":"CVE-2026-92063","ts":1789870390607,"field":"severity","old":"low","new":"medium"},{"seq":207008,"id":"CVE-2026-92063","ts":1789749739896,"field":"cvss","old":null,"new":"3.4"},{"seq":207007,"id":"CVE-2026-92063","ts":1789749739896,"field":"severity","old":"none","new":"low"}]}