CVE-2020-1423

Windows Subsystem for Linux Elevation of Privilege Vulnerability

CVE-2020-1423 is fixed in 3 products on 1 platform, first by KB4565503, released July 14, 2020. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
7.8
Important
Exploitation
None reported
Exploitation Less Likely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0078
56th percentile

<p>An elevation of privilege vulnerability exists in the way that the Windows Subsystem for Linux handles files. An attacker who successfully exploited the vulnerability could execute code with elevated privileges.</p> <p>To exploit the vulnerability, an attacker would first need code execution on a victim system. An attacker could then run a specially crafted application.</p> <p>The security update addresses the vulnerability by correcting how the Windows Subsystem for Linux handles files.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Windows 10 Version 2004 for ARM64-based Systems 19041.388 KB4565503 Jul 14, 2020
Windows 10 Version 2004 for x64-based Systems 19041.388 KB4565503 Jul 14, 2020
Windows Server, version 2004 (Server Core installation) 19041.388 KB4565503 Jul 14, 2020

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