CVE-2025-66442

CVE-2025-66442CVE-2025-66442

arm / mbed_tls

Description

In Mbed TLS through 4.0.0, there is a compiler-induced timing side channel (in RSA and CBC/ECB decryption) that only occurs with LLVM's select-optimize feature. TF-PSA-Crypto through 1.0.0 is also affected.

Scoring

CVSS 5.1 ()
VectorCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
Last modified2026-11-04
Sourced from NVD. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.