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.
Do your applications use this vulnerable package?
In a few clicks we can analyze your entire application and see what components are vulnerable in your application, and suggest you quick fixes.
Test your applications- Snyk IDSNYK-UNMANAGED-WOLFSSLWOLFSSH-14101598
- published23 Nov 2025
- disclosed21 Nov 2025
- creditJaehun Lee
Introduced: 21 Nov 2025
NewCVE-2025-11933 (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 when parsing TLS 1.3 CKS extensions. An unauthenticated attacker can cause the application to crash or become unresponsive by sending a specially crafted ClientHello message containing duplicate CKS extensions.