dbcve.org
GroupwareApplication · Handysoft

CVE-2021-26630

CRITICAL · 9.8 CVSS v3.1 Published 2022-05-19
Fix available
A fix is available. Upgrade to 1.7.4.7 / 2.0.3.7 or later.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.

NVD · unedited
Improper input validation vulnerability in HANDY Groupware’s ActiveX moudle allows attackers to download or execute arbitrary files. This vulnerability can be exploited by using the file download or execution path as the parameter value of the vulnerable function.

Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.

dbcve analysis · moderate confidence

HANDY Groupware contains an ActiveX module with improper input validation that allows attackers to manipulate file download or execution paths through vulnerable function parameters. The lack of validation on file path inputs enables arbitrary file retrieval or code execution on the target system.

MitigationDisable or remove the vulnerable ActiveX module until an official patch is available, and implement strict server-side input validation for all file path parameters to prevent path traversal attacks.

Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.

Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.

NVD · CPE data
GroupwareApplication
Affected:< 1.7.4.7>= 2.0.0.0, < 2.0.3.7>= 4.0.0.0, < 4.0.1.8

CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.

From the vector
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.

dbcve checks

Work through these to decide whether this CVE applies to you.

  1. Identify installed Handysoft Groupware version
    Check the application version through the product's about page, installation directory, or registry keys if applicable. Look for version information in the program files folder or the application itself.
    Affected if The installed version falls within any of these ranges: < 1.7.4.7, >= 2.0.0.0 and < 2.0.3.7, or >= 4.0.0.0 and < 4.0.1.8
  2. Locate the vulnerable ActiveX module
    Search for ActiveX components related to Handysoft in the system. Check the Windows registry under HKLM\SOFTWARE\Microsoft\Code Store Database\Distribution Units or within the Groupware installation directory for ActiveX control files (.ocx).
    Affected if The ActiveX module (typically named with groupware or handy-related identifiers) is present on the system
  3. Determine if file download or execution features are enabled
    Examine the Groupware configuration or admin settings to verify whether the file download/execution functionality provided by the ActiveX module is accessible to users. Check web.config or application configuration files for enabled features.
    Affected if The file download or execution functionality through the ActiveX module is enabled and accessible to users
  4. Verify input validation on file path parameters
    If you have access to the server configuration or can test the application, attempt to identify whether path traversal validation exists by reviewing server-side scripts or configuration that handle file path inputs for the ActiveX module.
    Affected if The application lacks proper server-side validation on file path parameters used by the ActiveX module, allowing characters like ../ to pass through unchecked

Your environment is affected if you run a vulnerable Handysoft Groupware version AND the ActiveX module with file download/execution capabilities is enabled and accessible without proper path validation.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.

dbcve · scoped
Upgrade available Upgrade to 1.7.4.7 / 2.0.3.7 / 4.0.1.8 or later
Fixed in 1.7.4.72.0.3.74.0.1.8
Interim mitigation

Disable or remove the vulnerable ActiveX module until an official patch is available, and implement strict server-side input validation for all file path parameters to prevent path traversal attacks.

Recommended fix Moderate confidence

1.7.4.7 (for 1.x), 2.0.3.7 (for 2.x), or 4.0.1.8 (for 4.x) - or the latest available version in your respective branch

  1. 1. Identify the currently installed HANDY Groupware version by checking the product's about or version information page
  2. 2. Determine which version branch you are running (1.x, 2.x, or 4.x)
  3. 3. For version 1.x: Plan upgrade to version 1.7.4.7 or later
  4. 4. For version 2.x: Plan upgrade to version 2.0.3.7 or later
  5. 5. For version 4.x: Plan upgrade to version 4.0.1.8 or later
  6. 6. Back up all groupware data, configurations, and databases before upgrading
  7. 7. Review upgrade documentation for your specific version branch
  8. 8. Perform the upgrade following vendor-provided installation procedures
Caveat Review vendor release notes; minor version upgrades within the same branch typically have minimal breaking changes, but test in staging first

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Groupware Scoped from the published advisory
  • Consultation4.0 h
  • Implementation16.0 h
  • Testing8.0 h
  • Review / QA4.0 h
32.0 hours of engineering $5,600
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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2021-26630 in production — separate from our analysis above.

No notes yet

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What this is

A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.

What belongs here
  • Verified mitigations, workarounds, and config changes
  • Version or environment caveats, and links to real fixes
  • No weaponised exploit code, or anything meant to cause harm
  • No spam, self-promotion, credentials, or personal data