Improper Handling of Length Parameter Inconsistency 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-14101626
- published23 Nov 2025
- disclosed21 Nov 2025
- creditJaehun Lee
Introduced: 21 Nov 2025
NewCVE-2025-11936 (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 Improper Handling of Length Parameter Inconsistency via improper validation of KeyShareEntry values during TLS 1.3 ClientHello message processing. An attacker can cause excessive CPU and memory consumption by sending a crafted ClientHello message with duplicate KeyShareEntry values for the same supported group.