{"id":"CVE-2026-92054","published":"2026-09-15T12:34:15Z","modified":"2026-09-16T14:24:40Z","title":"Privilege escalation in the Memory component","vendor":"Mozilla","product":"Firefox","tier":"tail","description":{"text":"Privilege escalation in the Memory component. This vulnerability was fixed in Firefox 156, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3.","provenance":"source","from":"CVE.org"},"cvss":{"score":8.8,"severity":"HIGH","version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","provenance":"source","from":"CISA ADP Vulnrichment"},"epss":{"score":0.00244,"percentile":0.15617,"provenance":"source"},"cwes":[{"id":"CWE-119","name":"Improper Restriction of Operations within the Bounds of a Memory Buffer"}],"references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2062551","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-90/","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-93/","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-94/","tags":[]},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-96/","tags":[]}],"priority":{"score":9.3,"factors":[{"name":"EPSS percentile","points":3.12},{"name":"CVSS severity","points":6.16}]},"vendorSlug":"mozilla","euvd":{"id":"EUVD-2026-78517","exploited":false,"provenance":"source"},"lineage":{"familyId":"fam-class-mozilla-firefox-cwe-119"}}