CVE-2020-16879

Projected Filesystem Information Disclosure Vulnerability

Description

An information disclosure vulnerability exists when a Windows Projected Filesystem improperly handles file redirections. An attacker who successfully exploited this vulnerability could obtain information to further compromise the user's system 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.

5.5

CVSS

Severity: Medium

CVSS 3.1 •

CVSS 2.0 •

EPSS 1.04% Top 25%

Vendor Advisory microsoft.com

Affected: Microsoft Windows 10 Version 1809

Affected: Microsoft Windows Server 2019

Affected: Microsoft Windows Server 2019 (Server Core installation)

Affected: Microsoft Windows 10 Version 1909

Affected: Microsoft Windows Server, version 1909 (Server Core installation)

Affected: Microsoft Windows 10 Version 1903 for 32-bit Systems

Affected: Microsoft Windows 10 Version 1903 for x64-based Systems

Affected: Microsoft Windows 10 Version 1903 for ARM64-based Systems

Affected: Microsoft Windows Server, version 1903 (Server Core installation)

Affected: Microsoft Windows 10 Version 2004

Affected: Microsoft Windows Server version 2004

References

Link	Tags
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16879	patch vendor advisory

Frequently Asked Questions

What is the severity of CVE-2020-16879?: CVE-2020-16879 has been scored as a medium severity vulnerability.
How to fix CVE-2020-16879?: To fix CVE-2020-16879, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2020-16879 being actively exploited in the wild?: It is possible that CVE-2020-16879 is being exploited or will be exploited in a near future based on public information. According to its EPSS score, there is a ~1% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2020-16879?: CVE-2020-16879 affects Microsoft Windows 10 Version 1809, Microsoft Windows Server 2019, Microsoft Windows Server 2019 (Server Core installation), Microsoft Windows 10 Version 1909, Microsoft Windows Server, version 1909 (Server Core installation), Microsoft Windows 10 Version 1903 for 32-bit Systems, Microsoft Windows 10 Version 1903 for x64-based Systems, Microsoft Windows 10 Version 1903 for ARM64-based Systems, Microsoft Windows Server, version 1903 (Server Core installation), Microsoft Windows 10 Version 2004, Microsoft Windows Server version 2004.