CVE-2021-38410
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 · uneditedAVEVA Software Platform Common Services (PCS) Portal versions 4.5.2, 4.5.1, 4.5.0, and 4.4.6 are vulnerable to DLL hijacking through an uncontrolled search path element, which may allow an attacker control to one or more locations in the search path.
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 confidenceAVEVA PCS Portal versions 4.4.6 through 4.5.2 contain a DLL hijacking vulnerability where the application uses an uncontrolled search path to load dynamic-link libraries. An attacker who can place a malicious DLL in a location within the search path (such as the application directory or a system path) can cause the application to load and execute arbitrary code with the privileges of the affected application.
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= 2020= 2020= 2020= 2020= 4.4.6= 4.5.0= 4.5.1= 4.5.2= 2020= 2020CVSS 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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Identify installed AVEVA product and versionOpen Windows Control Panel > Programs and Features, or use 'Get-ItemProperty' in PowerShell for registry key 'HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\*' to find AVEVA software and its displayed versionAffected if The installed product matches one of the affected products (Aveva Batch Management, Aveva Enterprise Data Management, Aveva Manufacturing Execution System, Aveva Mobile Operator, Aveva Platform Common Services, Aveva System Platform, Aveva Work Tasks) with version 2020 or 4.4.6/4.5.0/4.5.1/4.5.2
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Locate application executable directoryFind the main AVEVA application executable (typically in Program Files or Program Files (x86)\AVEVA) by right-clicking the shortcut and checking the 'Start in' path, or using 'Get-Process' and '(Get-Process -Name ProcessName).Path'Affected if You have located the directory where the AVEVA executable runs from
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Check application directory for write accessRight-click the application directory in File Explorer, go to Properties > Security, and verify which users have Write or Modify permissions. Alternatively, use 'icacls "C:\Path\To\AVEVA"' in command promptAffected if Any unprivileged user or attacker can write files to the application directory
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Enumerate DLLs in application directoryOpen the application directory in File Explorer and list all .dll files, or use 'Get-ChildItem "C:\Path\To\AVEVA" -Filter *.dll | Select Name' in PowerShellAffected if There are unexpected DLLs present that are not part of the standard installation or that were placed by an attacker
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Verify DLL search path configurationCheck if the application loads DLLs from the current directory first by examining system-wide DLL search order settings via registry 'HKLM\System\CurrentControlSet\Control\Session Manager\SafeDllSearchMode' (value 1 is safe) or by inspecting the application behaviorAffected if Safe DLL search mode is disabled (value 0) or the application explicitly uses current directory in its DLL search path
You are affected if you have any of the listed AVEVA products installed with version 2020 or versions 4.4.6 through 4.5.2, and the application directory or a system PATH location is writable by an untrusted user who could place a malicious DLL.
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-provided patches when available. As an interim measure, ensure the application directory and system PATH locations are secured against unauthorized write access, and verify that only trusted DLLs exist in the application's search path. Consider using absolute paths for DLL loading and enabling safe DLL search mode.
- Consultation3.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-38410 — 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-2021-38410 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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