CVE-2023-20852
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 · uneditedaEnrich Technology a+HRD has a vulnerability of Deserialization of Untrusted Data within its MSMQ interpreter. An unauthenticated remote attacker can exploit this vulnerability to execute arbitrary system commands to perform arbitrary system operation or disrupt service.
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 confidenceaEnrich Technology a+HRD contains a deserialization vulnerability in its MSMQ message queue interpreter. An unauthenticated remote attacker can send specially crafted malicious messages to the MSMQ service, causing arbitrary system command execution with the privileges of the affected service.
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= 6.8.1039v844CVSS 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 checksWork through these to decide whether this CVE applies to you.
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Verify a+HRD installationLocate the aEnrich a+HRD application installation directory, typically found in C:\Program Files\aEnrich\a+HRD or C:\aEnrich\a+HRD. Check for the presence of the application executable or service.Affected if The application is installed and no compensating controls are in place.
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Confirm installed versionRight-click on the main executable (typically a+HRD.exe or similar) and select Properties, then view the Details tab to find the File Version. Alternatively, check the Windows Programs and Features list for the installed version.Affected if The installed version is exactly 6.8.1039v844.
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Verify MSMQ service statusOpen Services console (services.msc) and locate the Microsoft Message Queue (MSMQ) service. Check if the service is running or set to start automatically.Affected if MSMQ service is enabled and running.
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Check MSMQ listening portOpen Command Prompt and run netstat -an | findstr "1801" to see if MSMQ port 1801 is listening. Port 1801 is the default MSMQ port.Affected if Port 1801 is open and listening on network interfaces accessible to attackers.
You are affected if a+HRD version 6.8.1039v844 is installed with MSMQ service enabled and the MSMQ port is accessible to untrusted networks.
Generated from the published advisory. Verify against your own configuration.
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.
From vendor dataApply vendor patch immediately if available; otherwise, restrict network access to the MSMQ service port and consider disabling MSMQ if not essential to business operations until a fix can be implemented.
- Consultation4.0 h
- Implementation8.0 h
- Testing6.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,600.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-20852 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-20852 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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- 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
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