{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-92240","assignerOrgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","state":"PUBLISHED","assignerShortName":"mozilla","dateReserved":"2026-09-15T19:42:52.961Z","datePublished":"2026-09-15T19:42:53.494Z","dateUpdated":"2026-09-22T15:44:32.223Z"},"containers":{"cna":{"affected":[{"product":"Thunderbird","vendor":"Mozilla","versions":[{"status":"unaffected","version":"140.16","lessThanOrEqual":"140.*","versionType":"rpm"},{"status":"unaffected","version":"153.3","lessThanOrEqual":"153.*","versionType":"rpm"},{"status":"unaffected","version":"156","lessThanOrEqual":"*","versionType":"rpm"}]}],"descriptions":[{"lang":"en","value":"A malicious or compromised IMAP server can trigger an out-of-bounds read in the IMAP response parser by sending an untagged '* ID' response, crashing Thunderbird. The affected parsing path is reachable before authentication. This vulnerability was fixed in Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.","supportingMedia":[{"type":"text/html","base64":false,"value":"A malicious or compromised IMAP server can trigger an out-of-bounds read in the IMAP response parser by sending an untagged '* ID' response, crashing Thunderbird. The affected parsing path is reachable before authentication. This vulnerability was fixed in Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3."}]}],"title":"Out-of-bounds read in IMAP response parser","references":[{"url":"https://bugzilla.mozilla.org/show_bug.cgi?id=2069113"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-94/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-95/"},{"url":"https://www.mozilla.org/security/advisories/mfsa2026-96/"}],"credits":[{"lang":"en","value":"Ahmed Albalawi"}],"providerMetadata":{"orgId":"f16b083a-5664-49f3-a51e-8d479e5ed7fe","shortName":"mozilla","dateUpdated":"2026-09-16T14:24:29.413Z"}},"adp":[{"problemTypes":[{"descriptions":[{"type":"CWE","cweId":"CWE-125","lang":"en","description":"CWE-125 Out-of-bounds Read"}]}],"metrics":[{"cvssV3_1":{"scope":"UNCHANGED","version":"3.1","baseScore":9.1,"attackVector":"NETWORK","baseSeverity":"CRITICAL","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H","integrityImpact":"NONE","userInteraction":"NONE","attackComplexity":"LOW","availabilityImpact":"HIGH","privilegesRequired":"NONE","confidentialityImpact":"HIGH"}},{"other":{"type":"ssvc","content":{"timestamp":"2026-09-22T15:41:57.658626Z","id":"CVE-2026-92240","options":[{"Exploitation":"none"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-09-22T15:44:32.223Z"}}]}}