CVE-2025-3932 Affecting thunderbird package, versions <1:128.10.1esr-1~deb11u1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.03% (8th percentile)

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  • Snyk IDSNYK-DEBIAN11-THUNDERBIRD-10168026
  • published15 May 2025
  • disclosed14 May 2025

Introduced: 14 May 2025

NewCVE-2025-3932  (opens in a new tab)

How to fix?

Upgrade Debian:11 thunderbird to version 1:128.10.1esr-1~deb11u1 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 Debian. See How to fix? for Debian:11 relevant fixed versions and status.

It was possible to craft an email that showed a tracking link as an attachment. If the user attempted to open the attachment, Thunderbird automatically accessed the link. The configuration to block remote content did not prevent that. Thunderbird has been fixed to no longer allow access to web pages listed in the X-Mozilla-External-Attachment-URL header of an email. This vulnerability affects Thunderbird < 128.10.1 and Thunderbird < 138.0.1.

CVSS Base Scores

version 3.1