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CVE-2025-12888

1.0 low SSVC exploitation: none Analyzed
NVD · CVE.org

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

Nothing published yet: no patch, vendor advisory or mitigation reference on NVD, no vendor advisory in the News for this CVE, not in CISA's KEV, no fixed package version. BaselineWatch does not guess at one.

Change history 1

  1. First seenCVSS 1.0 · wolfsslNVD modified 2026-10-19 13:10

Affected (CPE criteria) 1

  • cpe:2.3:a:wolfssl:wolfssl:5.8.2:*:*:*:*:*:*:*

References 1