: Configure the service to "Log on" as a specific user with the minimum required permissions rather than the default SYSTEM account. Download - NSSM - the Non-Sucking Service Manager
While unquoted paths are a generic Windows issue, many older installation scripts, wrappers, and tutorials used NSSM 2.24 without enforcing proper quoting. The prevalence of this version in legacy systems, and its frequent usage in automating service creation, made it a common vector in penetration tests and real-world attacks. Mitigation and Defense Strategies
is a highly popular, open-source utility designed to run ordinary executables as background Windows services . While highly efficient, deploying nssm.exe v2.24 within corporate software installers introduces structural local privilege escalation (LPE) risks if the deployment is misconfigured. nssm-2.24 privilege escalation
Evidence and observed occurrences
If you are worried about your system's security, you might want to consider checking your permissions to avoid risks. Do you have a specific service, software, or file path you are concerned about? Phoenix Contact : Configure the service to "Log on" as
type C:\ProgramData\poc.txt
: If a service path contains spaces (e.g., C:\Program Files\NSSM\nssm.exe ) and is not enclosed in double quotes, Windows will look for executables at every break. Mitigation and Defense Strategies is a highly popular,
Your payload runs as SYSTEM . Game over.