CVE-2025-66442
CVSS Score
5.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| Vendor | n/a |
| Product | n/a |
| Published | Apr 1, 2026 |
| Last Updated | Apr 1, 2026 |
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Affected Versions
n/a / n/a
n/a
References
github.com: https://github.com/Mbed-TLS/mbedtls/releases mbed-tls.readthedocs.io: https://mbed-tls.readthedocs.io/en/latest/security-advisories/ github.com: https://github.com/Mbed-TLS/TF-PSA-Crypto/releases mbed-tls.readthedocs.io: https://mbed-tls.readthedocs.io/en/latest/security-advisories/mbedtls-security-advisory-2026-03-compiler-induced-constant-time-violations/