Input validation error in Microsoft products - CVE-2021-1647

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Main Vulnerability Database Vulnerabilities #VU49401

Input validation error in Microsoft products - CVE-2021-1647

Published: January 12, 2021 / Updated: October 5, 2021


Vulnerability identifier: #VU49401
CSH Severity: Critical
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:A/U:Red
CVE-ID: CVE-2021-1647
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability: The vulnerability is being exploited in the wild
Vendor: Microsoft
Affected software:
Microsoft Security Essentials
Windows Defender
Microsoft System Center Endpoint Protection

Detailed vulnerability description

The vulnerability allows a remote attacker to compromise the affected system.

The vulnerability exists due to insufficient validation of user-supplied input. A remote attacker can pass specially crafted input to the application and execute arbitrary code on the system.

Note, the vulnerability is being actively exploited in the wild.


How to mitigate CVE-2021-1647

Install updates from vendor's website.

Sources