CVE-2026-0539 Local Privilege Escalation in pcvisit service client
A local attacker can escalate privileges to SYSTEM by overwriting the pcvisit service binary due to incorrect default permissions.
- 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-2026-0539?
CVE-2026-0539 is a high-severity vulnerability in pcvisit Remote Host Modul, published on 22 Apr 2026. It can only be exploited from the same machine or local network, with no action from the victim.
Official description
Incorrect Default Permissions in pcvisit service binary on Windows allows a low-privileged local attacker to escalate their privileges by overwriting the service binary with arbitrary contents. This service binary is automatically launched with NT\SYSTEM privileges on boot. This issue affects all versions after 22.6.22.1329 and was fixed in 25.12.3.1745.
Weakness: CWE-276
Which versions are affected by CVE-2026-0539?
How do I fix CVE-2026-0539?
No fix has been published for CVE-2026-0539 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-0539 being exploited?
There is no known exploitation of CVE-2026-0539 in the wild and no public exploit code.
Sources
Also known as GHSA-327c-mq4q-4h9h.