---
cve: "CVE-2026-92240"
severity: "LOW"
cvss: 3.1
epss: "0.2%"
vendor: "Generic Security"
kev: false
exploited: false
published: "2026-09-15 20:19:41"
tags: [cve, security, low]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T10:59:30+02:00"
---

# CVE-2026-92240

> 3.1 LOW

## Beschreibung

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.

## Referenzen

- <https://bugzilla.mozilla.org/show_bug.cgi?id=2069113>
- <https://www.mozilla.org/security/advisories/mfsa2026-94/>
- <https://www.mozilla.org/security/advisories/mfsa2026-95/>
- <https://www.mozilla.org/security/advisories/mfsa2026-96/>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-92240) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_