CVE-2025-4086 The advisory has been revoked - it doesn't affect any version of package thunderbird  (opens in a new tab)


Threat Intelligence

EPSS
0.04% (13th percentile)

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  • Snyk IDSNYK-UBUNTU2004-THUNDERBIRD-9910562
  • published1 May 2025
  • disclosed29 Apr 2025

Introduced: 29 Apr 2025

CVE-2025-4086  (opens in a new tab)

Amendment

The Ubuntu security team deemed this advisory irrelevant for Ubuntu:20.04.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by Ubuntu.

A specially crafted filename containing a large number of encoded newline characters could obscure the file's extension when displayed in the download dialog. This bug only affects Thunderbird for Android. Other versions of Thunderbird are unaffected. This vulnerability affects Firefox < 138 and Thunderbird < 138.