Windows Mark of the Web Security Feature Bypass Vulnerability
Priority LOW 28CWE-693Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · Low · Low
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Microsoft. Impact type from Microsoft.
Summary
Protection mechanism failure in Windows Mark of the Web (MOTW) allows an unauthorized attacker to bypass a security feature over a network.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01535 74th percentileScored 2026-11-07
Fix Fixed Microsoft: 3 updates
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Microsoft | Windows 10 Version 1507 | 10.0.10240.0 to before 10.0.10240.20978 | 10.0.10240.20978 | Patch available | CNA |
| Microsoft | Windows Server 2012 | 6.2.9200.0 to before 6.2.9200.25423 | 6.2.9200.25423 | Patch available | CNA |
| Microsoft | Windows Server 2012 (Server Core installation) | 6.2.9200.0 to before 6.2.9200.25423 | 6.2.9200.25423 | Patch available | CNA |
| Microsoft | Windows Server 2012 R2 | 6.3.9600.0 to before 6.3.9600.22523 | 6.3.9600.22523 | Patch available | CNA |
| Microsoft | Windows Server 2012 R2 (Server Core installation) | 6.3.9600.0 to before 6.3.9600.22523 | 6.3.9600.22523 | Patch available | CNA |
- Windows 10 Version 1507 VendorMicrosoft Affected 10.0.10240.0 to before 10.0.10240.20978 Fixed in 10.0.10240.20978 Patch available CNA
- Windows Server 2012 VendorMicrosoft Affected 6.2.9200.0 to before 6.2.9200.25423 Fixed in 6.2.9200.25423 Patch available CNA
- Windows Server 2012 (Server Core installation) VendorMicrosoft Affected 6.2.9200.0 to before 6.2.9200.25423 Fixed in 6.2.9200.25423 Patch available CNA
- Windows Server 2012 R2 VendorMicrosoft Affected 6.3.9600.0 to before 6.3.9600.22523 Fixed in 6.3.9600.22523 Patch available CNA
- Windows Server 2012 R2 (Server Core installation) VendorMicrosoft Affected 6.3.9600.0 to before 6.3.9600.22523 Fixed in 6.3.9600.22523 Patch available CNA
CPE configurations NVD · 4
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x64:* | before 10.0.10240.20978 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x86:* | before 10.0.10240.20978 | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Microsoft |
| cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* | r2 | Vulnerable | Microsoft |
- cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x64:* Versions before 10.0.10240.20978 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:x86:* Versions before 10.0.10240.20978 Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
- cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* Versions r2 Vulnerable ·Microsoft
Remediation
Microsoft 3 updates
- Monthly Rollup
- Windows Server 2012 6.2.9200.25423
- Windows Server 2012 (Server Core installation) 6.2.9200.25423
- Monthly Rollup
- Windows Server 2012 R2 6.3.9600.22523
- Windows Server 2012 R2 (Server Core installation) 6.3.9600.22523
- Security Update
- Windows 10 for 32-bit Systems 10.0.10240.20978
- Windows 10 for x64-based Systems 10.0.10240.20978
Vendor assessments
Microsoft
Microsoft's page for this CVE →
- Impact
- Security Feature Bypass
- Exploited
- No
- Publicly disclosed
- No
- Exploitability
- Exploitation More Likely
Timeline
- 2026-10-02 Threatist record created from CVE-2025-27472
- 2026-10-03 Alias added: GHSA-c538-wc2q-4rmx
References
More Microsoft Windows 10 1507 vulnerabilities
- TI-2017-06077 Microsoft Windows XP SP3, Windows XP x64 XP2, Windows Server 2003 SP2, Windows Vista… KEVCVSS 3.1CRITICAL 9.8
- TI-2025-24062 Windows SMB Client Elevation of Privilege Vulnerability KEVCVSS 3.1HIGH 8.8
- TI-2025-24042 Internet Shortcut Files Remote Code Execution Vulnerability KEVCVSS 3.1HIGH 8.8
- TI-2024-32708 Windows Task Scheduler Elevation of Privilege Vulnerability KEVCVSS 3.1HIGH 8.8
- TI-2024-29106 Windows MSHTML Platform Spoofing Vulnerability KEVCVSS 3.1HIGH 8.8
- TI-2024-19802 Windows MSHTML Platform Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
Sources
- CVE-2025-27472 · CVE Program
- CVE-2025-27472 · NVD
- FIRST EPSS
- GHSA-c538-wc2q-4rmx · GitHub Advisory Database · CC BY 4.0
- CVE-2025-27472 · Microsoft Security Update Guide
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences