CVE-2021-1655 : What You Need to Know

A Windows CSC Service Elevation of Privilege Vulnerability was published by Microsoft on January 12, 2021, impacting various Windows versions.

Understanding CVE-2021-1655

This section will provide insights into what CVE-2021-1655 is, its impact, technical details, and mitigation strategies.

What is CVE-2021-1655?

The CVE-2021-1655 refers to the Windows CSC Service Elevation of Privilege Vulnerability disclosed by Microsoft.

The Impact of CVE-2021-1655

This vulnerability allows threat actors to gain elevated privileges on affected Windows systems, posing a significant security risk.

Technical Details of CVE-2021-1655

Let's delve into the specifics of the vulnerability, affected systems, and exploitation mechanisms.

Vulnerability Description

The vulnerability lies in the Windows CSC Service, leading to an elevation of privilege potential for attackers.

Affected Systems and Versions

Windows 10 Version 20H2
Windows Server version 20H2
Windows 10 Versions 1803, 1809, 1909, 2004, 1507, and 1607
Windows Server versions 2019, 2016, 2012, 2012 R2, and more.

Exploitation Mechanism

Threat actors can exploit this vulnerability to raise their privileges on affected systems, enabling them to perform malicious activities.

Mitigation and Prevention

Here, we discuss immediate steps to take, long-term security practices, and the importance of patching and updates.

Immediate Steps to Take

Apply patches released by Microsoft promptly
Monitor network behavior for any signs of compromise

Long-Term Security Practices

Conduct regular security assessments and audits
Implement the principle of least privilege

Patching and Updates

Regularly check for security updates from Microsoft and ensure timely deployment to mitigate the risk of exploitation.