Integer Overflow or Wraparound Affecting thunderbird package, versions <0:140.11.1-1.amzn2.0.2


Severity

Recommended
high

Based on Amazon Linux security rating.

Threat Intelligence

EPSS
0.43% (34th percentile)

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  • Snyk IDSNYK-AMZN2-THUNDERBIRD-17286509
  • published10 Jun 2026
  • disclosed19 May 2026

Introduced: 19 May 2026

CVE-2026-8954  (opens in a new tab)
CWE-190  (opens in a new tab)

How to fix?

Upgrade Amazon-Linux:2 thunderbird to version 0:140.11.1-1.amzn2.0.2 or higher.
This issue was patched in ALAS2-2026-3340.

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.

Incorrect boundary conditions, integer overflow in the Audio/Video component. This vulnerability was fixed in Firefox 151, Firefox ESR 140.11, Thunderbird 151, and Thunderbird 140.11.

CVSS Base Scores

version 3.1