AUGUST 4, 2026
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Case File

CVE-2025-42959

HIGH · CVSS 8.1 EPSS 0.49% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2025-07-08 · Last synced 2026-08-04

CyberRota Analysis

This is a high severity vulnerability with a CVSS score of 8.1. Public exploit code or proof-of-concept references have been detected in its references. Exploitation may require the attacker to be authenticated.

Public Exploit Signal

A public exploit, PoC, GitHub repository or Metasploit reference was detected for this CVE.

Detected Signals
exploit

Note: these links are listed for security research and verification purposes only.

CVE
CVE-2025-42959
Severity
HIGH
CVSS
8.1
EPSS
0.49%

Original NVD Description

An unauthenticated attacker may exploit a scenario where a Hashed Message Authentication Code (HMAC) credential, extracted from a system missing specific security patches, is reused in a replay attack against a different system. Even if the target system is fully patched, successful exploitation could result in complete system compromise, affecting confidentiality, integrity, and availability.