Vulnerability Database

315,363

Total vulnerabilities in the database

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.

  • Published: Nov 21, 2025
  • Updated: Dec 5, 2025
  • CVE: CVE-2025-12888
  • Severity: High
  • Exploit:

CVSS v3:

  • Severity: High
  • Score: 7.5
  • AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CWEs:

Software From Fixed in
wolfssl / wolfssl 5.8.2 5.8.2.x