Heap-based Buffer Overflow Affecting wolfssl package, versions [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.
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 applicationsSnyk Learn
Learn about Heap-based Buffer Overflow vulnerabilities in an interactive lesson.
Start learning- Snyk IDSNYK-CONAN-WOLFSSL-15990450
- published12 Apr 2026
- disclosed9 Apr 2026
- creditUnknown
Introduced: 9 Apr 2026
NewCVE-2026-5447 (opens in a new tab)How to fix?
A fix was pushed into the master branch but not yet published.
Overview
Affected versions of this package are vulnerable to Heap-based Buffer Overflow in the CertFromX509 function when processing the AuthorityKeyIdentifier extension due to incorrect size handling. An attacker can cause a heap buffer overflow by supplying a specially crafted X.509 certificate.