CVE-2021-1651
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 · uneditedDiagnostics Hub Standard Collector Elevation of Privilege Vulnerability
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 an Elevation of Privilege (EoP) vulnerability in the Windows Diagnostics Hub Standard Collector service. The vulnerability allows a local attacker to gain higher privileges, likely by exploiting improper privilege management within the diagnostic collector component.
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= 2015>= 15.0, < 15.9>= 16.0, < 16.4>= 16.5, < 16.7= 16.8= 20h2= 1607= 1803= 1809= 1909= 2004all versions= 20h2= 1909= 2004all versionsCVSS 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
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/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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Check Windows versionRun 'winver' or 'systeminfo | findstr /B /C:"OS Name" /C:"OS Version"' to identify the installed Windows versionAffected if The version matches 20h2, 1607, 1803, 1809, 1909, or 2004 for Windows 10; or 20h2, 1909, or 2004 for Windows Server 2016/2019; or any version of Windows Server 2016/2019
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Verify Diagnostics Hub service presenceRun 'Get-Service | Where-Object {$_.Name -like "*DiagnosticsHub*"}' in PowerShell or check services.msc for 'Diagnostics Hub Standard Collector' serviceAffected if The 'Diagnostics Hub Standard Collector' service exists on the system
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Confirm security update installationRun 'Get-HotFix | Where-Object {$_.HotFixID -eq "KB4598481"}' in PowerShell to check if the January 2021 security update is installedAffected if The KB4598481 update is NOT installed, indicating the system is unpatched
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Check alternative update statusRun 'Get-WmiObject -Class Win32_QuickFixEngineering' and review installed updates for January 2021 security patchesAffected if No January 2021 security updates related to CVE-2021-1651 are present
A system is affected if it runs a vulnerable Windows version (10 1607, 1803, 1809, 1909, 2004, 20h2 or Server 2016/2019/2022) with the Diagnostics Hub Standard Collector service present and without the KB4598481 security update installed.
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 data15.916.416.7
Apply the relevant Windows security update (released January 2021) through Windows Update or deploy the corresponding KB patch to affected systems.
- Consultation2.0 h
- Implementation1.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,696.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2021-1651 — 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-2021-1651 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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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.
- 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