CVE-2025-3029 Affecting thunderbird package, versions <1:128.9.0esr-1~deb12u1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.33% (25th percentile)

Do your applications use this vulnerable package?

In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.

Test your applications
  • Snyk IDSNYK-ECHOLATEST-THUNDERBIRD-18318846
  • published26 Jul 2026
  • disclosed1 Apr 2025

Introduced: 1 Apr 2025

CVE-2025-3029  (opens in a new tab)

How to fix?

Upgrade Echo:latest thunderbird to version 1:128.9.0esr-1~deb12u1 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 Echo. See How to fix? for Echo:latest relevant fixed versions and status.

A crafted URL containing specific Unicode characters could have hidden the true origin of the page, resulting in a potential spoofing attack. This vulnerability was fixed in Firefox 137, Firefox ESR 128.9, Thunderbird 137, and Thunderbird 128.9.

CVSS Base Scores

version 3.1