Protection Mechanism Failure in Windows and Windows Server - CVE-2026-45595
Published: June 12, 2026
Vulnerability identifier: #VU134451
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-45595
CWE-ID: CWE-693
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Microsoft
Affected software:
Windows
Windows Server
Windows
Windows Server
Detailed vulnerability description
The vulnerability allows a remote attacker to bypass implemented security restrictions.
The vulnerability exists due to insufficient implementation of security measures in Windows Mark of the Web. A remote attacker can use a specially crafted file and bypass a security feature.
How to mitigate CVE-2026-45595
Install updates from vendor's website.