CVE-2021-22037 json
Under certain circumstances, when manipulating the Windows registry, InstallBuilder uses the reg.exe system command.
published 2021-10-29 5 y ago modified 2026-06-17 4 mo ago also EUVD-2021-9206
- cvss
- 7.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 21%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- vmware installbuilder 21.6.0
Exploit prediction
0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 7.8 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 4.4 | AV:L/AC:M/Au:N/C:P/I:P/A:P |
Affected products
- n/a VMware InstallBuilder
Classification
- Weakness
-
- CWE-427 Uncontrolled Search Path Element
References
-
blog.installbuilder.com
/2021/10/installbuilder-2160-released.html
release-notes, vendor-advisory
Sources
- CVE List CVE-2021-22037
- NVD CVE-2021-22037
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.