Incorrect Privilege Assignment Affecting thunderbird package, versions <0:140.14.0-1.amzn2.0.1


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.3% (23rd percentile)

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  • Snyk IDSNYK-AMZN2-THUNDERBIRD-19456944
  • published1 Sept 2026
  • disclosed18 Aug 2026

Introduced: 18 Aug 2026

NewCVE-2026-74965  (opens in a new tab)
CWE-266  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 thunderbird to version 0:140.14.0-1.amzn2.0.1 or higher.
This issue was patched in ALAS2-2026-3880.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by Amazon-Linux. See How to fix? for Amazon-Linux:2 relevant fixed versions and status.

Privilege escalation in the Shell Integration component. This vulnerability was fixed in Firefox 154, Firefox ESR 140.14, Firefox ESR 153.1, Thunderbird 154, Thunderbird 140.14, and Thunderbird 153.1.

CVSS Base Scores

version 3.1