CVE-2021-43248 : Security Advisory and Response

Windows Digital Media Receiver Elevation of Privilege Vulnerability identified in Windows OS.

Understanding CVE-2021-43248

What is CVE-2021-43248?

The CVE-2021-43248 is an Elevation of Privilege vulnerability impacting various Microsoft Windows versions.

The Impact of CVE-2021-43248

The vulnerability has a CVSS base score of 7.8, indicating a high severity level with the potential for unauthorized elevation of privileges.

Technical Details of CVE-2021-43248

Vulnerability Description

Vulnerability Name: Windows Digital Media Receiver Elevation of Privilege

Affected Systems and Versions

Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation), Windows 10 Version 1909, Windows 10 Version 21H1, Windows Server 2022, Windows 10 Version 2004, Windows Server version 2004, Windows 10 Version 20H2, Windows Server version 20H2, Windows 11 version 21H2, Windows 10 Version 21H2, Windows 10 Version 1507, Windows 10 Version 1607, Windows Server 2016, Windows Server 2016 (Server Core installation), Windows 8.1, Windows Server 2012, Windows Server 2012 (Server Core installation), Windows Server 2012 R2, Windows Server 2012 R2 (Server Core installation)

Exploitation Mechanism

Attackers can exploit this vulnerability to gain elevated privileges on the affected Windows systems.

Mitigation and Prevention

Immediate Steps to Take

Apply the security patch provided by Microsoft.
Monitor for any unusual activities on the network.

Long-Term Security Practices

Regularly update systems with the latest security patches.
Implement the principle of least privilege to limit user privileges.

Patching and Updates

Ensure to keep the operating system and software up to date with the latest security updates.