{"id":"CVE-2026-92045","title":"Sandbox escape due to incorrect boundary conditions in the WebRTC component","summary":"Sandbox escape due to incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.","severity":"critical","cvss":9.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H","cwe":["CWE-119","CWE-653"],"vendor":"Mozilla","product":"Firefox","affected":["Firefox","Thunderbird"],"published":"2026-09-15","updated":"2026-09-21","sourceUpdated":"2026-09-21T18:17:13.193","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-92045","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2054622","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-90/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-93/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-94/","label":"security@mozilla.org"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-96/","label":"security@mozilla.org"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92045.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-92045"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2533746"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-92045"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92045"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-90/#CVE-2026-92045"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-94/#CVE-2026-92045"}],"tags":["nvd","cve.org","csaf","vex","red-hat","score-dispute"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-09-21T17:34:15.587084Z"},"epss":0.00152,"epssPercentile":0.04707,"scores":{"nvd":9.6,"vendor":6.1,"adp":9.6},"ingestedAt":"2026-09-15T12:36:50.185Z","slug":"CVE-2026-92045","body":"## Overview\n\nSandbox escape due to incorrect boundary conditions in the WebRTC component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.\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 2026-09-17 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-92045.json)","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":52.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[{"seq":208667,"id":"CVE-2026-92045","ts":1790016691910,"field":"cvss","old":"6.1","new":"9.6"},{"seq":208666,"id":"CVE-2026-92045","ts":1790016691910,"field":"severity","old":"medium","new":"critical"},{"seq":206340,"id":"CVE-2026-92045","ts":1789663219441,"field":"cvss","old":null,"new":"6.1"},{"seq":206339,"id":"CVE-2026-92045","ts":1789663219441,"field":"severity","old":"none","new":"medium"}]}