CVE-2025-12888
Constant Time Issue with Xtensa-based ESP32 and X22519
Summary
Constant Time Issue with Xtensa-based ESP32 and X22519
Original description
The description as published by the source.
Vulnerability in X25519 constant-time cryptographic implementations due to timing side channels introduced by compiler optimizations and CPU architecture limitations, specifically with the Xtensa-based ESP32 chips. If targeting Xtensa it is recommended to use the low memory implementations of X25519, which is now turned on as the default for Xtensa.
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2025-12888 wolfssl
- Ubuntu UBUNTU-CVE-2025-12888 wolfssl
References
- advisory github.com
- advisory nvd.nist.gov
- web https