RevoWorks incomplete filtering of MS Office v4 macros


RevoWorks SCVX, RevoWorks Browser and RevoWorks Desktop provided by J's Communication Co., Ltd. enables users to execute web browsers, accessing drives, folders, files and registries in a sandboxed environment. Users can download files from the internet to the sandboxed environment, sanitizing through "File Sanitization Library" or "File Sanitization Option", and import to the local environment.
"File Sanitization Library" and "File Sanitization Option" are implemented with some third-party component, but the component's filtering functionality is incomplete, fails to detect nor remove Microsoft Excel 4.0 (XLM) Macros (CWE-791).

The developer reported this vulnerability to IPA to notify users of its solution through JVN. JPCERT/CC and the developer coordinated under the Information Security Early Warning Partnership.
CVSS Severity (What is CVSS?)

CVSS V3 Severity:
Base Metrics 5.2 (Medium) [IPA Score]
  • Attack Vector: Local
  • Attack Complexity: High
  • Privileges Required: None
  • User Interaction: Required
  • Scope: Changed
  • Confidentiality Impact: Low
  • Integrity Impact: Low
  • Availability Impact: Low
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

J's Communication Co., Ltd.
  • RevoWorks Browser 2.2.67 and prior versions (when using "File Sanitization Option")
  • RevoWorks Desktop 2.1.84 and prior versions (when using "File Sanitization Option")
  • RevoWorks SCVX 1.043 and prior versions


When downloading and importing a file to the local environment and open it, some malicious macros may be executed.

[Update the Software]
Update the product according to the information provided by the developer.

The developer provides the following fixed versions:
  • RevoWorks SCVX using "File Sanitization Library" 1.044 and later
  • RevoWorks Browser 2.2.69 and later
  • RevoWorks Desktop 2.1.85 and later
Vendor Information

J's Communication Co., Ltd.
CWE (What is CWE?)

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

  1. CVE-2022-27176

  1. JVN : JVN#27256219
Revision History

  • [2022/05/27]
      Web page was published