Installers generated by Squirrel.Windows may insecurely load Dynamic Link Libraries


Squirrel.Windows is both a toolset and a library that provides installation and update functionality for Windows desktop applications.
Installers generated by Squirrel.Windows contain an issue with the DLL search path, which may lead to insecurely loading Dynamic Link Libraries (CWE-427).

Koh You Liang of Sompo Holdings, Inc. reported this vulnerability to the developer first, and to IPA later.
JPCERT/CC coordinated with the developer under Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 7.8 (High) [IPA Score]
  • Attack Vector: Local
  • Attack Complexity: Low
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Unchanged
  • Confidentiality Impact: High
  • Integrity Impact: High
  • Availability Impact: High
CVSS V2 Severity:
Base Metrics 6.8 (Medium) [IPA Score]
  • Access Vector: Network
  • Access Complexity: Medium
  • Authentication: None
  • Confidentiality Impact: Partial
  • Integrity Impact: Partial
  • Availability Impact: Partial
Affected Products

  • Squirrel.Windows Installers generated by 2.0.1 and earlier


Arbitrary code may be executed with the privilege of the user invoking the installer.

As of December 21, 2022, the fixed version is not provided.
According to the developer, there are no plans to release the fixed version soon, but the following fix was committed to 'develop' branch of the GitHub repository on June 1, 2021.

You should create Squirrel.Windows from the latest source code from 'develop' branch and use it to generate an installer.
Vendor Information

CWE (What is CWE?)

  1. No Mapping(CWE-Other) [IPA Evaluation]
CVE (What is CVE?)

  1. CVE-2022-46330

  1. JVN : JVN#29902403
  2. JVN : JVNTA#91240916
Revision History

  • [2022/12/21]
      Web page was published