{"id":"CVE-2026-8975","revision":null,"records":[{"revision":"2fd680e97b924b86a22547d2ff8e4719","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-8975","aliases":[],"title":"Memory safety bugs fixed in Thunderbird 140.11 and Thunderbird 151","description":"Memory safety bugs present in Thunderbird 140.10 and Thunderbird 150. Some of these bugs showed evidence of memory corruption and we presume that with enough effort some of these could have been exploited to run arbitrary code. This vulnerability was fixed in Firefox 151, Firefox ESR 115.36, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.","state":0,"publishedAt":"2026-05-19T12:30:24.616+00:00","modifiedAt":"2026-10-21T13:50:41.267+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\": \"115.36\",\n                            \"lessThanOrEqual\": \"115.*\",\n                            \"versionType\": \"rpm\"\n                        },\n                        {\n                            \"status\": \"unaffected\",\n                            \"version\": \"140.11\",\n                            \"lessThanOrEqual\": \"140.*\",\n                            \"versionType\": \"rpm\"\n                        },\n                        {\n                            \"status\": \"unaffected\",\n                            \"version\": \"151\",\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\": \"140.11\",\n                            \"lessThanOrEqual\": \"140.*\",\n                            \"versionType\": \"rpm\"\n                        },\n                        {\n                            \"status\": \"unaffected\",\n                            \"version\": \"151\",\n                            \"lessThanOrEqual\": \"*\",\n                            \"versionType\": \"rpm\"\n                        }\n                    ]\n                }"}],"metrics":[],"references":["https://bugzilla.mozilla.org/buglist.cgi?bug_id=1860195%2C2029325%2C2029429%2C2029910%2C2035915%2C2038678%2C2038669","https://www.mozilla.org/security/advisories/mfsa2026-46/","https://www.mozilla.org/security/advisories/mfsa2026-47/","https://www.mozilla.org/security/advisories/mfsa2026-48/","https://www.mozilla.org/security/advisories/mfsa2026-50/","https://www.mozilla.org/security/advisories/mfsa2026-51/"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-8975","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-8975","identifiers":["CVE-2026-8975"]},"retained":false,"historicalAffected":[]}],"coverage":[{"source":"cisa-kev:global","scope":"Complete CISA KEV catalog; all vendors. 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