Integer Underflow Affecting wolfSSL/wolfssh package, versions [,5.8.4)
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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Test your applications- Snyk IDSNYK-UNMANAGED-WOLFSSLWOLFSSH-14101642
- published23 Nov 2025
- disclosed21 Nov 2025
- creditLuigino Camastra
Introduced: 21 Nov 2025
NewCVE-2025-11931 (opens in a new tab)How to fix?
Upgrade wolfSSL/wolfssh to version 5.8.4 or higher.
Overview
Affected versions of this package are vulnerable to Integer Underflow via the wc_XChaCha20Poly1305_Decrypt() function. An attacker can cause out-of-bounds memory access, if the wc_XChaCha20Poly1305 function is called on it directly by an application and not through TLS connections.