CVEvulnerability
CVE-2025-66442
5.1 MEDIUM
Official page ↗
- Status
- Analyzed
- Published
- 2026-04-01
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0)
- 5.1 MEDIUM — CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weaknesses
- CWE-385
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.
Affected configurations
• arm mbed tls (<= 4.0.0)
• arm tf-psa-crypto (<= 1.0.0)
Related
Weakness · CWE (1)
- CWE-385 Covert Timing Channel weakness
References
- https://github.com/Mbed-TLS/TF-PSA-Crypto/releases Release Notes
- https://github.com/Mbed-TLS/mbedtls/releases Release Notes
- https://mbed-tls.readthedocs.io/en/latest/security-advisories/ Vendor Advisory
- https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2026-03-compiler-induced-constant-time-violations/ Vendor Advisory