CVE-2025-12888

LOW EPSS 18.4%
Published Nov 21, 20257mo ago · Modified Jun 17, 20262w ago
1.0 CVSS 4.0
Low
Find Similar
Published Nov 21, 2025 7mo ago
Last Modified Jun 17, 2026 2w ago

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.

CVSS Details

Base Score
1.0
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:P/AC:H/AT:P/PR:L/UI:N/VC:L/VI:N/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Physical
Attack Complexity High
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
18.4% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-203

Affected Products 1

VendorProductVersionRange
wolfsslwolfssl5.8.2any

References 1

  • https https://https://github.com/wolfSSL/wolfssl/pull/9275
    Broken Link

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.