{"id":"CVE-2026-74989","revision":null,"records":[{"revision":"d8a95fcd27e84a0dab20651c37c02212","observedAt":"2026-10-28T17:46:48.824+00:00","statement":{"source":"cve-program","id":"CVE-2026-74989","aliases":[],"title":"Internally found bugs fixed in Firefox 154","description":"Internally found bugs present in Firefox 153. Some of these bugs showed evidence of memory corruption or another security-relevant defect and we presume that with enough effort some of these could have been exploited. This vulnerability was fixed in Firefox 154 and Thunderbird 154.","state":0,"publishedAt":"2026-08-18T12:23:41.853+00:00","modifiedAt":"2026-10-28T16:36:02.55+00:00","affected":[{"ecosystem":"Vendor product","name":"Firefox","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Firefox\",\n                    \"vendor\": \"Mozilla\",\n                    \"versions\": [\n                        {\n                            \"status\": \"unaffected\",\n                            \"version\": \"154\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"versionType\": \"rpm\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"Thunderbird","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"product\": \"Thunderbird\",\n                    \"vendor\": \"Mozilla\",\n                    \"versions\": [\n                        {\n                            \"status\": \"unaffected\",\n                            \"version\": \"154\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"versionType\": \"rpm\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://bugzilla.mozilla.org/buglist.cgi?bug_id=2022257%2C2027351%2C2027380%2C2029289","https://bugzilla.mozilla.org/buglist.cgi?bug_id=2027388%2C2029750%2C2029794%2C2043298%2C2045126%2C2049810%2C2051741","https://www.mozilla.org/security/advisories/mfsa2026-74/","https://www.mozilla.org/security/advisories/mfsa2026-78/"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-74989","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-74989","identifiers":["CVE-2026-74989"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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