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CVE-2021-22037

7.8 · HIGH

Under certain circumstances, when manipulating the Windows registry, InstallBuilder uses the reg.exe system command.

Published Oct 29, 2021CWE-427EPSS 0.29%

Overview

CVE-2021-22037 is a high-severity vulnerability. It was published on October 29, 2021 and has a CVSS 3.1 base score of 7.8 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical description

Under certain circumstances, when manipulating the Windows registry, InstallBuilder uses the reg.exe system command. The full path to the command is not enforced, which results in a search in the search path until a binary can be identified. This makes the installer/uninstaller vulnerable to Path Interception by Search Order Hijacking, potentially allowing an attacker to plant a malicious reg.exe command so it takes precedence over the system command. The vulnerability only affects Windows installers.

Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

References

Refblog.installbuilder.com/2021/10/installbuilder-2160-released.htmlRefblog.installbuilder.com/2021/10/installbuilder-2160-released.html

How CyberStrike helps

Frequently asked questions

What is CVE-2021-22037?

CVE-2021-22037 is a high-severity vulnerability. It was published on October 29, 2021 and has a CVSS 3.1 base score of 7.8 (HIGH).

How severe is CVE-2021-22037?

This vulnerability has a CVSS 3.1 base score of 7.8, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2021-22037?

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2021-22037?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2021-22037 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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