CVE-2021-42311 Explained : Impact and Mitigation

Microsoft Defender for IoT Remote Code Execution Vulnerability was published on December 15, 2021.

Understanding CVE-2021-42311

This CVE impacts Microsoft Defender for IoT with a critical CVSS base score of 10.

What is CVE-2021-42311?

Microsoft Defender for IoT is vulnerable to remote code execution, allowing attackers to execute arbitrary code remotely.

The Impact of CVE-2021-42311

Severity: Critical
CVSS Base Score: 10
Vector String: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H/E:U/RL:O/RC:C

Technical Details of CVE-2021-42311

This section provides more technical insights into the vulnerability.

Vulnerability Description

The vulnerability allows remote attackers to execute arbitrary code on the affected systems.

Affected Systems and Versions

Vendor: Microsoft
Product: Microsoft Defender for IoT
Versions Affected: 22.0.0 (custom) and earlier

Exploitation Mechanism

Attackers can exploit this vulnerability remotely to run malicious code on the system.

Mitigation and Prevention

Protect your systems against this vulnerability by taking the following steps.

Immediate Steps to Take

Update Microsoft Defender for IoT to version 10.5.2 or higher.
Implement network segmentation to limit attacker access.

Long-Term Security Practices

Regularly monitor and patch IoT devices.
Conduct security training for users and developers.

Patching and Updates

Ensure timely patches and updates for Microsoft Defender for IoT to address this vulnerability.