Nssm-2.24 Exploit

There is or memory corruption vulnerability in NSSM 2.24. If you need to secure NSSM services:

privileges—attackers exploit improper file permissions or unquoted paths in the parent application to replace the binary with a malicious one. Exploit-DB Key Exploitation Scenarios nssm-2.24 exploit

The NSSM-2.24 exploit can have severe consequences, including: There is or memory corruption vulnerability in NSSM 2

The most significant vulnerability associated with NSSM in recent years is , an improper permission configuration issue affecting NSSM installations as part of the Phoenix Contact Device and Update Management (DaUM) software suite. This permission level allowed standard

This permission level allowed standard, non-administrator users to replace the nssm.exe file used to launch the CouchDB service. Since the Apache CouchDB service runs with LocalSystem privileges, replacing the binary would cause the service—upon restart or system reboot—to execute arbitrary code with SYSTEM rights. The exploit technique, documented in Exploit-DB reference 40865, remains a textbook example of how third-party software vendors inadvertently create privilege escalation vectors by inheriting insecure permissions across their deployment packages.

CVE-2025-41686 specifically affects Phoenix Contact's DaUM product (Model 1542953) in versions earlier than 2025.3.1. However, the vulnerability pattern—improper inherited permissions on NSSM binaries embedded within third-party software installations—has broader implications. Security researchers have identified similar misconfigurations affecting:

The NSSM-2.24 exploit works by taking advantage of the following steps: