CVE-2021-22037

HIGH
7.8
CVSS Score
Published: October 29, 2021 at 11:09 AM UTC
Updated: June 17, 2026 at 03:36 AM UTC
1 product affected across 1 vendorInstallbuilder

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Severity
HIGH7.8
Exploit prediction
EPSS 0.3%

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 21.6.0
Affected range stops below 21.6.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
NONE
User Interaction
REQUIRED
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-427

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