CVE tracker / CVE-2025-27472
CVE-2025-27472
CVE-2025-27472 is the Windows Mark of the Web Security Feature Bypass Vulnerability. Microsoft rates it Important, CVSS 5.4. It is not in CISA's Known Exploited Vulnerabilities catalog. Published April 8, 2025.
Risk summary
Microsoft describes it: “Protection mechanism failure in Windows Mark of the Web (MOTW) allows an unauthorized attacker to bypass a security feature over a network.”
How to fix it
Microsoft lists 6 affected products and the update that fixes each:
- KB5055547 · fixed build 10.0.10240.20978
Windows 10 for x64-based Systems, Windows 10 for 32-bit Systems - KB5055557 · fixed build 6.3.9600.22523
Windows Server 2012 R2 (Server Core installation), Windows Server 2012 R2 - KB5055581 · fixed build 6.2.9200.25423
Windows Server 2012 (Server Core installation), Windows Server 2012
What Microsoft changed
- April 9, 2025: The security updates for Windows 10 for 32-bit Systems and Windows 10 for x64-based Systems are now available. See the Security Updates table for more information.
- April 8, 2025: Information published.
Details
- Weakness
- CWE-693: Protection Mechanism Failure
- Publicly disclosed (Microsoft)
- No
- Exploited (Microsoft)
- No
- Known exploited (CISA KEV)
- Not listed
- Published
- April 8, 2025
- Last revised
- April 9, 2025
Get told when this changes
Senserva Watch emails Microsoft security and patch alerts when something moves: a new exploitation report, a revised fix, a known issue. Free, one email address.
References
From Microsoft, CISA, NVD and FIRST data; the Microsoft details were read when this page was opened. Check the references above before you act.