🛡️ CVE-2025-12888
🟠 CVSS 7.5 — High ✅ No Known Exploit CWE-203 NVD
7.5
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

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.

Details

Severity HIGH
CVSS Score 7.5
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CWE CWE-203
Public Exploit ✅ No
Source NVD
Published 2025-11-21
Updated 2026-06-02
Modified 2025-12-04
Fix URL N/A

Affected Packages

Software From version Fixed in
wolfssl

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