CVE-2025-2830 Affecting thunderbird package, versions <1:128.12.0+build1-0ubuntu0.22.04.1


Severity

Recommended
medium

Based on Ubuntu security rating.

Threat Intelligence

EPSS
0.05% (17th percentile)

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  • Snyk IDSNYK-UBUNTU2204-THUNDERBIRD-9726865
  • published23 Jul 2025
  • disclosed15 Apr 2025

Introduced: 15 Apr 2025

CVE-2025-2830  (opens in a new tab)

How to fix?

Upgrade Ubuntu:22.04 thunderbird to version 1:128.12.0+build1-0ubuntu0.22.04.1 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by Ubuntu. See How to fix? for Ubuntu:22.04 relevant fixed versions and status.

By crafting a malformed file name for an attachment in a multipart message, an attacker can trick Thunderbird into including a directory listing of /tmp when the message is forwarded or edited as a new message. This vulnerability could allow attackers to disclose sensitive information from the victim's system. This vulnerability is not limited to Linux; similar behavior has been observed on Windows as well. This vulnerability affects Thunderbird < 137.0.2 and Thunderbird < 128.9.2.

CVSS Base Scores

version 3.1