CVE-2021-44718: wolfSSL

Medium severity, CVSS 5.9. EPSS: 0.7% chance of exploitation in the next 30 days.

wolfSSL through 5.0.0 allows an attacker to cause a denial of service and infinite loop in the client component by sending crafted traffic from a Machine-in-the-Middle (MITM) position. The root cause is that the client module accepts TLS messages that normally are only sent to TLS servers.

Affected products

• wolfSSL wolfSSL: up to and including 5.0.0

Published 2022-09-02. Last modified 2026-06-17.