CVE-2023-51711
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 · uneditedAn issue was discovered in Regify Regipay Client for Windows version 4.5.1.0 allows DLL hijacking: a user can trigger the execution of arbitrary code every time the product is executed.
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 confidenceThis is a DLL hijacking vulnerability in Regify Regipay Client for Windows 4.5.1.0 where an attacker can place a malicious DLL in a location the application loads from during execution, leading to arbitrary code execution every time the product runs.
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= 4.5.1.0CVSS 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
- Local
- Complexity
- Low
- Privileges
- None
- User interaction
- Required
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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 Regify Regipay installationOpen Control Panel > Programs and Features, or run 'Get-ItemProperty HKLM:\Software\Microsoft\Windows\CurrentVersion\Uninstall\* | Where-Object {$_.DisplayName -like "*Regify*"} | Select-Object DisplayName, DisplayVersion' in PowerShellAffected if Regify Regipay version 4.5.1.0 is installed
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Locate the application executableFind the installation path by right-clicking the application in Programs and Features and selecting 'Open file location', or search for 'regipay.exe' on the systemAffected if The executable 'regipay.exe' exists in an accessible directory
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Check application directory for writable DLLsExamine the directory containing regipay.exe for any DLL files. Run 'Get-ChildItem -Path "<installation_path>" -Filter "*.dll" | Select-Object Name, LastWriteTime' to list DLLs. Check if non-system users have write permissions to this folder using 'Get-Acl "<installation_path>" | Select-Object Access'Affected if Any DLL files are present in the application directory and the folder has weak permissions allowing untrusted users to write files
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Inspect DLL search path behaviorMonitor the application's DLL loading by running 'procmon.exe' from Sysinternals with a filter for 'regipay.exe', or use 'dumpbin /dependents <path>\regipay.exe' to list DLLs it attempts to loadAffected if The application loads DLLs from its own directory without using absolute paths, allowing a malicious DLL with a matching name to be loaded
A user is affected if Regify Regipay Client version 4.5.1.0 is installed and the application directory is writable by untrusted users, enabling DLL hijacking.
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 dataFix the application's DLL loading mechanism to use secure practices such as absolute paths, disable unsafe DLL search paths, or implement DLL redirection manifests; also restrict file system permissions on application directories to prevent unauthorized DLL placement.
- Consultation4.0 h
- Implementation8.0 h
- Testing4.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $5,696.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-51711 — 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-2023-51711 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
- No spam, self-promotion, credentials, or personal data