CVE-2026-92240 in Thunderbird

Riassunto

di MITRE • 15/09/2026

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.

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• Responsabile: Mozilla
• Prenotare: 15/09/2026
• Divulgazione: 15/09/2026
• Moderazione: accettato
• Voce: VDB-404669
• CPE: pronto
• CWE: CWE-125 (confermato)
• CVSS: 7.3 (VulDB)
• EPSS: 0.00000
• KEV: no
• Attività: molto basso
• Settore: Hostingprovider, Chemical, ...

Fonti

• MITRE: https://www.cve.org/CVERecord?id=CVE-2026-92240
• NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-92240
• CVE Details: https://www.cvedetails.com/cve/CVE-2026-92240/