CVE-2021-47866 WIN-PACK PRO 4.8 - 'GuardTourService' Unquoted Service Path
Local attackers can execute arbitrary code with elevated privileges by exploiting an unquoted service path in WIN-PACK PRO.
- Exploited in the wild
- Not known
- Login needed
- Any signed-in user
- Attackable
- Local or same network only
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2021-47866?
CVE-2021-47866 is a high-severity vulnerability in Honeywell WIN-PACK PRO, published on 21 Jan 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
WIN-PACK PRO 4.8 contains an unquoted service path vulnerability in the GuardTourService that allows local users to potentially execute code with elevated system privileges. Attackers can exploit the unquoted path in C:\Program Files <x86>\WINPAKPRO\WP GuardTour Service.exe to inject malicious code that would execute during service startup.
Weakness: CWE-428
Which versions are affected by CVE-2021-47866?
How do I fix CVE-2021-47866?
No fix has been published for CVE-2021-47866 yet. Limit exposure of the affected software until one is available.
Is CVE-2021-47866 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2021-47866 exists.
Sources
Also known as GHSA-h9fc-fr94-vw4p.