CVE-2022-30203
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 · uneditedWindows Boot Manager Security Feature Bypass 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 · low confidenceA vulnerability in Windows Boot Manager that allows bypass of a security feature. The specific mechanism and affected security control are not detailed in available documentation. Given the CVSS score of 7.4, this is a significant issue affecting the early boot chain of trust.
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 dataall versions= 20h2= 21h1= 21h2= 1607= 1809all versionsall versionsall versionsall versionsall versions= r2all versions= r2all versions= 20h2CVSS 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
- Physical
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Changed
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:P/AC:L/PR:L/UI:N/S:C/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 Windows versionRun 'winver' or 'systeminfo | findstr /B /C:"OS Name" /C:"OS Version"' from command promptAffected if Version matches any listed in affected products (Windows 10 versions 20h2, 21h1, 21h2, 1607, 1809; Windows 11; Windows 7; Windows 8.1; Windows Rt 8.1; Windows Server 2008/2008 R2; Windows Server 2012/2012 R2; Windows Server 2016)
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Verify Secure Boot statusRun 'Confirm-SecureBootUEFI' in PowerShell (returns True/False). On systems without UEFI, this may not be applicable.Affected if Secure Boot is disabled (False returned) on an affected Windows version, indicating the security control the vulnerability bypasses is not active
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Check BitLocker protection statusRun 'manage-bde -status C:' or check 'Get-BitLockerVolume C:' in PowerShellAffected if BitLocker is not enabled on the system drive, leaving boot data unprotected
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Review boot configurationRun 'bcdedit /enum all' to view Boot Manager configuration entries and security settingsAffected if Boot Manager security settings show modifications or bypass indicators, or no integrity enforcement is configured
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Check for installed security updatesRun 'wmic qfe list' or 'Get-HotFix | Where-Object {$_.Description -like "Security Update"}' in PowerShell, then search for CVE-2022-30203 or May/June 2022 security bulletinsAffected if No relevant CVE-2022-30203 security update is installed on an affected Windows version
A system is likely affected if it runs any affected Windows version without the CVE-2022-30203 security update and has boot security features like Secure Boot disabled or not properly configured.
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 Microsoft security updates for CVE-2022-30203 once available. For enterprises, deploy via standard patch management processes after testing in controlled environments.
- Consultation4.0 h
- Implementation16.0 h
- Testing8.0 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 $8,960.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-30203 — 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-2022-30203 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