AIKIDO-2026-10427
wolfSSL.wolfssl is vulnerable to Improper Authentication
55
Medium Risk
This Affects:
wolfSSL.wolfsslTL;DR
The TLS 1.2 server state machine can accept a CertificateVerify message before ClientKeyExchange has been received, violating the expected handshake order. Later releases improve detection timing in the handshake, and the listed fix tightens validation earlier in the flow. The change enforces correct message ordering so the invalid sequence cannot complete.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range.
Background info
wolfSSL.wolfssl is vulnerable to Improper Authentication in versions 0.0.1 - 5.8.4.
How to fix this
Upgrade the wolfSSL.wolfssl library to the patch version.
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SOC 2Compliant
ISO 27001Compliant