CVE-2025-14330 Affecting firefox-esr package, versions <140.6-r0


Severity

Recommended
0.0
critical
0
10

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Threat Intelligence

EPSS
0.5% (40th percentile)

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  • Snyk IDSNYK-CHAINGUARDLATEST-FIREFOXESR-17765115
  • published1 Jul 2026
  • disclosed9 Dec 2025

Introduced: 9 Dec 2025

CVE-2025-14330  (opens in a new tab)

How to fix?

Upgrade Chainguard firefox-esr to version 140.6-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.

JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 146, Firefox ESR 140.6, Thunderbird 146, and Thunderbird 140.6.

CVSS Base Scores

version 3.1