AUGUST 4, 2026
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Case File

CVE-2025-40538

CRITICAL · CVSS 9.1 EPSS 0.50% Public Exploit

Source: NVD + CISA KEV + EPSS (historical backfill) · Published 2026-02-24 · Last synced 2026-08-04

CyberRota Analysis

This is a critical severity vulnerability with a CVSS score of 9.1. It affects Windows. Public exploit code or proof-of-concept references have been detected in its references.

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-2025-40538
Severity
CRITICAL
CVSS
9.1
EPSS
0.50%
Windows

Original NVD Description

A broken access control vulnerability exists in Serv-U which when exploited, gives a malicious actor the ability to create a system admin user and execute arbitrary code as a privileged account via domain admin or group admin privileges. This issue requires administrative privileges to abuse. On Windows deployments, the risk is scored as a medium because services frequently run under less-privileged service accounts by default.

Related CVEs

Other vulnerabilities affecting the same vendor(s)