CVE-2022-25638: wolfSSL

Medium severity, CVSS 6.5. EPSS: 0.6% chance of exploitation in the next 30 days.

In wolfSSL before 5.2.0, certificate validation may be bypassed during attempted authentication by a TLS 1.3 client to a TLS 1.3 server. This occurs when the sig_algo field differs between the certificate_verify message and the certificate message.

Affected products

• wolfSSL wolfSSL: before 5.2.0 (fixed in 5.2.0)

Published 2022-02-24. Last modified 2026-06-17.