CVE-2024-45157: Trustedfirmware Mbed TLS

Medium severity, CVSS 5.1. EPSS: 0.2% chance of exploitation in the next 30 days.

An issue was discovered in Mbed TLS before 2.28.9 and 3.x before 3.6.1, in which the user-selected algorithm is not used. Unlike previously documented, enabling MBEDTLS_PSA_HMAC_DRBG_MD_TYPE does not cause the PSA subsystem to use HMAC_DRBG: it uses HMAC_DRBG only when MBEDTLS_PSA_CRYPTO_EXTERNAL_RNG and MBEDTLS_CTR_DRBG_C are disabled.

Affected products

• Trustedfirmware Mbed TLS: from 2.26.0, before 2.28.9 (fixed in 2.28.9); from 3.2.0, before 3.6.1 (fixed in 3.6.1)

Published 2024-09-05. Last modified 2026-06-17.