Back to Database
Status published
Medium
CVE-2021-31191
Windows Projected File System FS Filter Driver Information Disclosure Vulnerability
Vulnerability Description
Windows Projected File System FS Filter Driver Information Disclosure Vulnerability
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
THREAT MONITOR
Am I Vulnerable?
Launch our assessment wizard to check if your infrastructure is exposed to • CVE-2021-31191
Credits & Attribution
No credits recorded in the NVD database.
More from Microsoft
View All →CVE-2025-9611
Microsoft Playwright MCP Server < 0.0.40 DNS Rebinding via Missing Origin Header Validation
High
7.2
CVE-2025-9491
Microsoft Windows LNK File UI Misrepresentation Remote Code Execution Vulnerability
High
7
CVE-2025-7326
EOL ASP.NET Core Elevation of Privilege Vulnerability
High
7
CVE-2025-65046
Microsoft Edge (Chromium-based) Spoofing Vulnerability
Low
3.1
CVE-2025-65041
Microsoft Partner Center Elevation of Privilege Vulnerability
Critical
10
Affected Vendor
Microsoft
View all reports →Affected Software
Windows 10 Version 1803, Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation), Windows 10 Version 1909, Windows Server, version 1909 (Server Core installation), Windows 10 Version 2004, Windows Server version 2004, Windows 10 Version 20H2, Windows Server version 20H2
Vulnerable Versions:
10.0.0
Timeline
Official Publish:
May 11th, 2021
Last Modified:
August 3rd, 2024
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C
Weaknesses (CWE)
No CWE data available
MITRE ATT&CK TTPs
No associated TTPs found for this vulnerability.