CVE-2025-14329 Affecting firefox-esr package, versions <140.6.0esr-1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.06% (18th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-FIREFOXESR-14267906
  • published10 Dec 2025
  • disclosed9 Dec 2025

Introduced: 9 Dec 2025

CVE-2025-14329  (opens in a new tab)

How to fix?

Upgrade Debian:unstable firefox-esr to version 140.6.0esr-1 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 Debian. See How to fix? for Debian:unstable relevant fixed versions and status.

Privilege escalation in the Netmonitor component. This vulnerability was fixed in Firefox 146, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.

CVSS Base Scores

version 3.1