certificateverify

wolfSSL disclosed a protocol‑validation flaw tracked as CVE‑2025‑11934 that can let a TLS 1.3 handshake inadvertently downgrade the signature algorithm used for CertificateVerify, enabling a server‑side negotiation to settle on a weaker ECDSA curve than the client originally preferred — a...

A newly recorded flaw in TLS 1.2 implementations lets a client deliberately choose a weaker message digest than the server requested during client-certificate authentication — a subtle but real violation of the TLS 1.2 handshake rules that has been cataloged as CVE-2025-12889 and fixed in the...