CVE-2024-23744: Trustedfirmware Mbed TLS

High severity, CVSS 7.5. EPSS: 0.7% chance of exploitation in the next 30 days.

An issue was discovered in Mbed TLS 3.5.1. There is persistent handshake denial if a client sends a TLS 1.3 ClientHello without extensions.

Affected products

• Trustedfirmware Mbed TLS: after 3.4.0, up to and including 3.5.1

Published 2024-01-21. Last modified 2026-06-17.