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CVE-2025-66442

Published: 4/1/2026 Last updated: 4/1/2026 Reserved: 12/1/2025

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.

CNA assigner: mitre (8254265b-2729-46b6-b9e3-3dfca2d5bfca) Requested by: n/a

Metrics

Version Score Severity Vector String
3.1 5.1 Medium CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N

Opam packages affected (1)

conf-mbedtls

Products affected (0)

No product listed.

References (4)