CVE-2025-66269 Unquoted Service Path in UPSilon2000V6.0(RupsMon and USBMate) running as SYSTEM
Local attackers can escalate privileges to SYSTEM via unquoted service paths in UPSilon 2000 monitoring tools.
- 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-2025-66269?
CVE-2025-66269 is a high-severity vulnerability in MegaTec Taiwan UPSilon2000V6.0, published on 26 Nov 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
The RupsMon and USBMate services in UPSilon 2000 run with SYSTEM privileges and contain unquoted service paths. This allows a local attacker to perform path interception and escalate privileges if they have write permissions to the directories proceeding that of which the real service executables live in
Weakness: CWE-428
Which versions are affected by CVE-2025-66269?
How do I fix CVE-2025-66269?
No fix has been published for CVE-2025-66269 yet. Limit exposure of the affected software until one is available.
Is CVE-2025-66269 being exploited?
There is no known exploitation of CVE-2025-66269 in the wild and no public exploit code.
Sources
Also known as GHSA-2jxx-qpjm-mvc4.