CVE-2021-28311 Explained : Impact and Mitigation

Windows Application Compatibility Cache Denial of Service Vulnerability was disclosed by Microsoft on April 13, 2021, impacting various versions of Windows operating systems.

Understanding CVE-2021-28311

This vulnerability is classified as a Denial of Service issue with a CVSS base score of 6.5 (Medium severity).

What is CVE-2021-28311?

The Windows Application Compatibility Cache Denial of Service Vulnerability allows an attacker to exploit the affected systems, leading to a denial of service condition.

The Impact of CVE-2021-28311

This vulnerability can be exploited by an attacker to cause a denial of service, potentially disrupting normal system operations.

Technical Details of CVE-2021-28311

Windows 10 Version 1803, 1809, various Windows Server versions, Windows 10 Version 1909, 2004, 20H2, 1607, and Windows Server 2016 are affected. The vulnerability status is marked as affected for all these versions.

Vulnerability Description

The vulnerability arises from an issue in the Windows Application Compatibility feature, allowing an attacker to trigger a denial of service condition.

Affected Systems and Versions

The vulnerability affects a range of Windows versions, including Windows 10 and various Windows Server versions specified earlier.

Exploitation Mechanism

Exploitation of this vulnerability could lead to a denial of service condition, impacting the availability of the affected systems.

Mitigation and Prevention

It is crucial to take immediate action to mitigate the risk posed by CVE-2021-28311.

Immediate Steps to Take

Ensure systems are updated with the latest security patches from Microsoft to address this vulnerability promptly.

Long-Term Security Practices

Adopting robust security measures, such as network segmentation and access controls, can help prevent exploitation of vulnerabilities in the future.

Patching and Updates

Regularly monitor for security updates from Microsoft and apply patches promptly to ensure system security.