VULNERABILITY INTELLIGENCE

CVE-2025-66442

CVSS score5.1 MEDIUM
EPSS probability0.28%
CISA KEVNot currently listed
Published2026-04-01
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

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.

Weakness classification

  • CWE-385: Covert Timing Channel

Primary references