Vulnerability Details CVE-2025-12888
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.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 9.7%
CVSS Severity
CVSS v3 Score 7.5