VULNERABILITY INTELLIGENCE

CVE-2025-40539

CVSS score9.1 CRITICAL
EPSS probability0.48%
CISA KEVNot currently listed
Published2026-02-24
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Description

A type confusion vulnerability exists in Serv-U which when exploited, gives a malicious actor the ability to execute arbitrary native code as privileged account. 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.

Weakness classification

  • CWE-704: Incorrect Type Conversion or Cast

Primary references