Integer Overflow or Wraparound Affecting thunderbird package, versions [,140.11)[141.0,151.0)
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Start learning- Snyk IDSNYK-UNMANAGED-THUNDERBIRD-16769887
- published20 May 2026
- disclosed19 May 2026
- creditAmeen Basha M K
Introduced: 19 May 2026
CVE-2026-8954 (opens in a new tab)How to fix?
Upgrade thunderbird to version 140.11, 151.0 or higher.
Overview
Affected versions of this package are vulnerable to Integer Overflow or Wraparound due to improper handling of boundary conditions in the Audio/Video component. An attacker can cause unexpected behavior or potentially execute arbitrary code by supplying specially crafted audio or video data.