Nssm-2.24 Privilege Escalation Work

For example, if an NSSM service is configured with the following path: C:\Program Files\App Service\nssm.exe Windows will try to interpret this in the following order: C:\Program.exe C:\Program Files\App.exe C:\Program Files\App Service\nssm.exe

Do you manage your services primarily through or standalone PowerShell scripts ?

Rather than placing the nssm.exe binary in Program Files or shared application directories, move it to a dedicated secure location with restricted permissions. nssm-2.24 privilege escalation

A dangerous weakness exists in NSSM (Non-Sucking Service Manager) versions 2.24 and below. If an attacker has (standard user) access to a system where an NSSM service runs as SYSTEM , they can trivially escalate to NT AUTHORITY\SYSTEM by abusing the service’s binary path.

The issue is not a memory corruption bug but a : For example, if an NSSM service is configured

Privilege escalation typically occurs not because of a bug in NSSM, but because of misconfigurations in the services it creates. In many cases, these misconfigurations allow a low-privileged user to gain SYSTEM or Administrator access. 1. Unquoted Service Paths

When NSSM 2.24 is present, it is usually targeted via three common Windows service misconfigurations: Head Mare and Twelve: Joint attacks on Russian entities If an attacker has (standard user) access to

user wants a long article about "nssm-2.24 privilege escalation". I need to gather comprehensive information about this specific vulnerability. I'll search for technical details, CVEs, exploit code, and discussions. search results show several CVEs and related vulnerabilities. I should open the relevant ones to gather details. user's question has high authority requirements, I should prioritize using information from CVE records and official sources. I have gathered information on CVE-2025-41686, CVE-2016-20033, CVE-2024-51448, and an unquoted service path issue. I should also search for more detailed technical analyses, exploit proofs of concept, and vendor advisories. have gathered sufficient information on CVE-2025-41686, related vulnerabilities (CVE-2016-20033, CVE-2024-51448), and the unquoted service path issue. I also have details on the exploitation vector, affected products, and mitigation strategies. I will now structure the article. NSSM-2.24 Privilege Escalation: A Deep Dive into Windows Service Manager Vulnerabilities

accesschk.exe -uwcqv "Authenticated Users" <service_name> accesschk.exe -uwcqv "BUILTIN\Users" <service_name>

NSSM is convenient but dangerous if misconfigured. Always assume that a service running as SYSTEM with writable configuration is a . Audit your endpoints, and don’t let convenience override security.

Right-click your specific service, select , and verify that standard user groups only have Read access.