#VU122547 Protection Mechanism Failure in Windows - CVE-2026-21513
Published: February 10, 2026
Vulnerability identifier: #VU122547
Vulnerability risk: Critical
CVSSv4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red
CVE-ID: CVE-2026-21513
CWE-ID: CWE-693
Exploitation vector: Remote access
Exploit availability:
The vulnerability is being exploited in the wild
Vulnerable software:
Windows
Windows
Software vendor:
Microsoft
Microsoft
Description
The vulnerability allows a remote attacker to compromise the affected system.
The vulnerability exists due to insufficient implementation of security measures. An attacker can trick the the victim into clicking on a specially crafted link or on a shortcut (.lnk) file and execute arbitrary code on the system.
Note, the vulnerability is being actively exploited in the wild.
Remediation
Install updates from vendor's website.