CVE-2025-11935: wolfSSL

High severity, CVSS 7.5. EPSS: 0.2% chance of exploitation in the next 30 days.

With TLS 1.3 pre-shared key (PSK) a malicious or faulty server could ignore the request for PFS (perfect forward secrecy) and the client would continue on with the connection using PSK without PFS. This happened when a server responded to a ClientHello containing psk_dhe_ke without a key_share extension. The re-use of an authenticated PSK connection that on the clients side unexpectedly did not have PFS, reduces the security of the connection.

Affected products

• wolfSSL wolfSSL: from 5.8.2, before 5.8.4 (fixed in 5.8.4)

Published 2025-11-21. Last modified 2026-06-17.