CVE-2025-3032 Affecting firefox-esr package, versions <140.5.0-r0


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.37% (30th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-FIREFOXESR-14887025
  • published7 Jan 2026
  • disclosed1 Apr 2025

Introduced: 1 Apr 2025

CVE-2025-3032  (opens in a new tab)

How to fix?

Upgrade Chainguard firefox-esr to version 140.5.0-r0 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream firefox-esr package and not the firefox-esr package as distributed by Chainguard. See How to fix? for Chainguard relevant fixed versions and status.

Leaking of file descriptors from the fork server to web content processes could allow for privilege escalation attacks. This vulnerability was fixed in Firefox 137 and Thunderbird 137.

CVSS Base Scores

version 3.1