CVE-2021-38597: wolfSSL

Medium severity, CVSS 5.9. EPSS: 0.5% chance of exploitation in the next 30 days.

wolfSSL before 4.8.1 incorrectly skips OCSP verification in certain situations of irrelevant response data that contains the NoCheck extension.

Affected products

• wolfSSL wolfSSL: before 4.8.1 (fixed in 4.8.1)

Published 2021-08-12. Last modified 2026-06-17.