CVE-2026-0539

Name: CVE-2026-0539
Creator: NVD / NIST
Published: 2026-04-22T14:16:30.317+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.5/10EPSS 0.10%

Last modified Jun 17, 2026

CVE-2026-0539 is a high-severity vulnerability rated 8.5/10 on the CVSS scale. 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. EPSS estimates a 0.10% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 4.0

8.5/10

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

EPSS Probability

0.10%

1.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-276

References

Timeline

Published: Apr 22, 2026
Last Modified: Jun 17, 2026
Status: Deferred

Frequently Asked Questions

What is CVE-2026-0539?

How severe is CVE-2026-0539?

CVE-2026-0539 has a CVSS score of 8.5/10 (HIGH severity). The EPSS model estimates a 0.10% probability of exploitation in the next 30 days.

How do I fix CVE-2026-0539?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2026-0539?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST