🛡️ CVE-2025-66442
🟡 CVSS 5.1 — Medium ✅ No Known Exploit CWE-385 NVD
5.1
CVSS Score
0 Low4 Medium7 High9 Critical10

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.

Details

Severity MEDIUM
CVSS Score 5.1
CVSS Vector CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE CWE-385
Public Exploit ✅ No
Source NVD
Published 2026-04-01
Updated 2026-06-02
Modified 2026-04-03
Fix URL N/A

Affected Packages

Software From version Fixed in
mbed-tls 4.0.0
tf-psa-crypto 1.0.0

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