Nssm-2.24 Privilege | Escalation

Here is a comprehensive breakdown of how this vulnerability works, how attackers exploit it, and how to secure your environment. The Core Vulnerability: Insecure File Permissions

Note: This information is for educational and defensive purposes only. nssm-2.24 privilege escalation

Using accesschk.exe from Sysinternals or PowerShell, the attacker checks if they have SERVICE_CHANGE_CONFIG or WRITE_DAC rights: Here is a comprehensive breakdown of how this

– Configure NSSM services to run as a managed service account (gMSA) instead of LOCAL SYSTEM. Attackers who establish an initial foothold as a

Attackers who establish an initial foothold as a low-privileged local user leverage these structural flaws to hijack the service execution chain. This allows them to run malicious code under the context of NT AUTHORITY\SYSTEM —effectively gaining full, unrestricted administrative control over the machine. Anatomy of NSSM 2.24 Security Vulnerabilities

NSSM version 2.24 is vulnerable to local privilege escalation when installed with insecure file permissions, allowing low-privileged users to replace the executable and run malicious code as SYSTEM. The vulnerability stems from Weak Service Permissions where attackers modify the service binary path, requiring remediation via strict Access Control List (ACL) configuration on the executable directories. For more information, visit the official nssm.cc documentation.