CVE-2021-3451
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 · uneditedA denial of service vulnerability was reported in Lenovo PCManager, prior to version 3.0.400.3252, that could allow configuration files to be written to non-standard locations.
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 confidenceLenovo PCManager before version 3.0.400.3252 contains a path traversal vulnerability allowing configuration files to be written to arbitrary locations outside the intended directory. This could enable a local attacker to overwrite system files or cause denial of service through application instability.
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< 3.0.400.3252CVSS 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
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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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Check if Lenovo PCManager is installedLook for the application in the Windows Start Menu, or check for the installation directory typically at C:\Program Files\Lenovo\PCManager or C:\Program Files (x86)\Lenovo\PCManagerAffected if The application is present on the system
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Locate the version informationRight-click on the PCManager.exe file in the installation folder, select Properties, and view the Details tab for the Product Version. Alternatively, open Add or Remove Programs, find Lenovo PCManager, and note the installed version displayedAffected if Version cannot be determined from the application or its metadata
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Compare installed version against the affected rangeParse the version number found (e.g., 3.0.400.3252) and compare it numerically to 3.0.400.3252 using standard version comparison rulesAffected if The installed version is lower than 3.0.400.3252 (for example, 3.0.300.1234 or 2.x.x.x)
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Verify the service or update component is activeOpen Services.msc and look for Lenovo PCManager related services, or check if the application auto-update component is enabled in the application settingsAffected if The PCManager service or auto-update feature is running and the version is below 3.0.400.3252
The system is affected if Lenovo PCManager is installed with a version number lower than 3.0.400.3252, as this version range contains the path traversal vulnerability in the configuration file handling.
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 data3.0.400.3252
Update Lenovo PCManager to version 3.0.400.3252 or later to obtain the vendor patch; enterprises should deploy via patch management and verify installation.
- Consultation2.0 h
- Implementation4.0 h
- Testing2.0 h
- Review / QA1.0 h
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Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-3451 — 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-2021-3451 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
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