CVE-2025-8033 Affecting thunderbird package, versions <1:128.13.0esr-1


Severity

Recommended
low

Based on default assessment until relevant scores are available.

Threat Intelligence

EPSS
0.02% (5th percentile)

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  • Snyk IDSNYK-DEBIANUNSTABLE-THUNDERBIRD-10882232
  • published24 Jul 2025
  • disclosed22 Jul 2025

Introduced: 22 Jul 2025

NewCVE-2025-8033  (opens in a new tab)

How to fix?

Upgrade Debian:unstable thunderbird to version 1:128.13.0esr-1 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:unstable relevant fixed versions and status.

The JavaScript engine did not handle closed generators correctly and it was possible to resume them leading to a nullptr deref. This vulnerability affects Firefox < 141, Firefox ESR < 115.26, Firefox ESR < 128.13, Firefox ESR < 140.1, Thunderbird < 141, Thunderbird < 128.13, and Thunderbird < 140.1.

CVSS Base Scores

version 3.1