Incorrect Privilege Assignment Affecting thunderbird package, versions <0:140.14.0-1.el9_4


Severity

Recommended
high

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.44% (36th percentile)

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  • Snyk IDSNYK-RHEL9-THUNDERBIRD-19724333
  • published13 Sept 2026
  • disclosed18 Aug 2026

Introduced: 18 Aug 2026

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

How to fix?

Upgrade RHEL:9 thunderbird to version 0:140.14.0-1.el9_4 or higher.
This issue was patched in RHSA-2026:65669.

NVD Description

Note: Versions mentioned in the description apply only to the upstream thunderbird package and not the thunderbird package as distributed by RHEL. See How to fix? for RHEL:9 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