CVE-2026-84641

7.5 Élevée

Publiée le 02/09/2026 à 00:17 · Modifiée le 03/09/2026 à 21:01 · Analysée par le NVD · Source : security@mozilla.org

Description

A malicious IMAP server can trigger use-after-free and heap-memory disclosure by sending a crafted ID response. Heap contents can ultimately be persisted to prefs.js. This vulnerability was fixed in Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.

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Produits concernés

Mozilla Thunderbird

Scores CVSS

Version	Score	Source	Vecteur
3.1	7.5 Élevée	134c704f-9b21-4f2e-91b3-4a467353bcc0	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`

Faiblesses (CWE)

CWE-416

Références

https://bugzilla.mozilla.org/show_bug.cgi?id=2057805 Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-86/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-87/ Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-88/ Vendor Advisory

Ailleurs

NVD
CVE.org
CIRCL Vulnerability-Lookup
CERT-FR
GitHub Advisories