CVE-2025-66442: 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.
Overview
- Severity
- Medium (CVSS 5.1)
- CVSS Vector
- CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:N/E:U
- Exploit Status
- Not Exploited
- Patch Tuesday
- 2026-Apr
- Released
- 2026-05-07
- Last Updated
- 2026-06-02
- EPSS Score
- 0.27% (percentile: 18.5%)
Affected Products (2)
Open Source Software
- azl3 nodejs24 24.14.1-2 on Azure Linux 3.0
Other
Revision History
- 2026-05-07: Information published.
- 2026-05-19: Information published.
- 2026-05-31: Information published.
- 2026-06-01: Information published.
- 2026-06-02: Information published.