TI-2020-00780 Aliases CVE-2020-0805 GHSA-w4mr-vhgh-2fq7

Projected Filesystem Security Feature Bypass Vulnerability

LOW 26Published 2020-09-11 · Updated 2024-08-04

Key facts

Attack vector: Local
Privileges required: Low
User interaction: None
Attack complexity: Low
Impact type: —
Confidentiality · integrity · availability: None · High · None
Fix status: Fixed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA.

Summary

A security feature bypass vulnerability exists when a Windows Projected Filesystem improperly handles file redirections. An attacker who successfully exploited this vulnerability could delete a targeted file they would not have permissions to. To exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability. The security update addresses the vulnerability by correcting how Windows Projected Filesystem handle file redirections.

Why it matters now

EPSS 0.00871 59th percentileScored 2026-11-07

Fix Fixed Windows 10 Version 2004 (Microsoft): publicationWindows Server version 2004 (Microsoft): publication

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Microsoft	Windows 10 Version 2004	10.0.0 to before publication	publication	Patch available	CNA
Microsoft	Windows Server version 2004	10.0.0 to before publication	publication	Patch available	CNA

Windows 10 Version 2004 VendorMicrosoft Affected 10.0.0 to before publication Fixed in publication Patch available CNA
Windows Server version 2004 VendorMicrosoft Affected 10.0.0 to before publication Fixed in publication Patch available CNA

CPE configurations NVD · 2

CPE	Versions	Role	Vendor
cpe:2.3:o:microsoft:windows_10:2004:::::::*	2004	Vulnerable	Microsoft
cpe:2.3:o:microsoft:windows_server_2016:2004:::::::*	2004	Vulnerable	Microsoft

cpe:2.3:o:microsoft:windows_10:2004:*:*:*:*:*:*:* Versions 2004 Vulnerable ·Microsoft
cpe:2.3:o:microsoft:windows_server_2016:2004:*:*:*:*:*:*:* Versions 2004 Vulnerable ·Microsoft

Remediation

Fix · CNA Windows 10 Version 2004 (Microsoft) Fixed in publication
Fix · CNA Windows Server version 2004 (Microsoft) Fixed in publication

Timeline

2026-10-02 Threatist record created from CVE-2020-0805
2026-10-03 Alias added: GHSA-w4mr-vhgh-2fq7

References

Patch 1

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0805

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TI-2019-00906 Remote Desktop Services Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
TI-2022-15533 Windows Internet Key Exchange (IKE) Protocol Extensions Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
TI-2015-01587 Mount Manager in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows… KEVCVSS 3.1MEDIUM 6.6

See all 2973 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences