{"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": "2026-09-15T20:01:42.207Z"}, "containers": {"cna": {"affected": [{"product": "Thunderbird", "vendor": "Mozilla", "versions": [{"status": "unaffected", "version": "140.16", "lessThanOrEqual": "140.*", "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 and Thunderbird 140.16.", "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 and Thunderbird 140.16."}]}], "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/"}], "credits": [{"lang": "en", "value": "Ahmed Albalawi"}], "providerMetadata": {"orgId": "f16b083a-5664-49f3-a51e-8d479e5ed7fe", "shortName": "mozilla", "dateUpdated": "2026-09-15T20:01:42.207Z"}}}}

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{"affected": [{"affectedData": [{"product": "Thunderbird", "vendor": "Mozilla", "versions": [{"lessThanOrEqual": "140.*", "status": "unaffected", "version": "140.16", "versionType": "rpm"}, {"lessThanOrEqual": "*", "status": "unaffected", "version": "156", "versionType": "rpm"}]}], "source": "security@mozilla.org"}], "cveTags": [], "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 and Thunderbird 140.16."}], "id": "CVE-2026-92240", "lastModified": "2026-09-15T20:19:41.677", "metrics": {}, "published": "2026-09-15T20:19:41.677", "references": [{"source": "security@mozilla.org", "url": "https://bugzilla.mozilla.org/show_bug.cgi?id=2069113"}, {"source": "security@mozilla.org", "url": "https://www.mozilla.org/security/advisories/mfsa2026-94/"}, {"source": "security@mozilla.org", "url": "https://www.mozilla.org/security/advisories/mfsa2026-95/"}], "sourceIdentifier": "security@mozilla.org", "vulnStatus": "Received"}

{}

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