PatchTheCVECVE-2021-22037: Under certain circumstances, when manipulating the Windows registry, InstallBuilder uses the reg.exe system co
CVE-2021-22037 is a high-severity flaw (CVSS 7.8) affecting installbuilder. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
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 com
Why this priority
- High severity
A fixed release or distro patch exists.
Risk facts
| CVSS score | 7.8 (High) |
| Attack vector | Local |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.3% (top 79%) |
| CISA exploited list | No |
| Weakness | CWE-427 |
| Published | 2021-10-29 |
| Last modified | 2026-06-17 |
Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2021-22037?
installbuilder: upgrade to 21.6.0. Exact commands for each OS are on this page.
Is CVE-2021-22037 being exploited?
CVE-2021-22037 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2021-22037 affect?
CVE-2021-22037 affects installbuilder. Severity is high (CVSS 7.8). 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
How urgent is CVE-2021-22037?
Priority 33/100. High severity
Software pages
Windows vulnerabilities · VMware vulnerabilities
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