CVE-2020-1120 : What You Need to Know

A denial of service vulnerability in the Connected User Experiences and Telemetry Service in Microsoft Windows.

Understanding CVE-2020-1120

What is CVE-2020-1120?

This CVE refers to a denial of service vulnerability caused by improper handling of file operations in the Connected User Experiences and Telemetry Service on Microsoft Windows systems.

The Impact of CVE-2020-1120

This vulnerability could allow an attacker to exploit the service, leading to a denial of service condition, potentially disrupting system functionality.

Technical Details of CVE-2020-1120

Vulnerability Description

The vulnerability arises from incorrect file operation handling within the Connected User Experiences and Telemetry Service.

Affected Systems and Versions

Windows 10 Version 2004 for 32-bit Systems
Windows 10 Version 2004 for x64-based Systems
Windows Server, version 2004 (Server Core installation)
Windows 10 Version 2004 for ARM64-based Systems

Exploitation Mechanism

The vulnerability can be exploited by an attacker sending malicious requests to the affected service, causing it to become unresponsive.

Mitigation and Prevention

Immediate Steps to Take

Apply the latest security updates from Microsoft.
Monitor for any unusual service behavior indicating a potential attack.

Long-Term Security Practices

Implement network segmentation to limit the service's exposure.
Regularly review and enforce secure file operation handling practices.

Patching and Updates

Ensure that systems are regularly updated with the latest patches and security fixes to mitigate the risk of exploitation.