Windows 10 21h2Operating system · Microsoft

CVE-2026-32218

MEDIUM · 5.5 CVSS v3.1 Published 2026-04-14
Fix available
A fix is available. Upgrade to 10.0.19044.7184 / 10.0.19045.7184 or later.
See remediation →
57/100
Remediation priority · Elevated
Zero-click

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 · unedited
Insertion of sensitive information into log file in Windows Kernel allows an authorized attacker to disclose information locally.

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 confidence

Windows Kernel contains a vulnerability where sensitive information is inadvertently written to log files, allowing a local authorized attacker to access information they should not have access to. This is an information disclosure flaw in the kernel's logging mechanisms.

MitigationApply the appropriate Microsoft security update for Windows Kernel when released. Ensure proper access controls on system log files and monitor for unauthorized access.

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
Windows 10 21h2Operating system
Affected:< 10.0.19044.7184
Windows 10 22h2Operating system
Affected:< 10.0.19045.7184
Windows 11 23h2Operating system
Affected:< 10.0.22631.6936
Windows 11 24h2Operating system
Affected:< 10.0.26100.8246
Windows 11 25h2Operating system
Affected:< 10.0.26200.8246
Windows 11 26h1Operating system
Affected:< 10.0.28000.1836
Windows Server 2022Operating system
Affected:< 10.0.20348.5020
Windows Server 2022 23h2Operating system
Affected:< 10.0.25398.2274

CVSS 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
None
Availability
None

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

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 checks

Work through these to decide whether this CVE applies to you.

  1. Check Windows version against affected ranges
    Run 'winver' or 'systeminfo | findstr /B /C:"OS Version"' to obtain the build number. Compare against: Windows 10 21h2 (<10.0.19044.7184), 10 22h2 (<10.0.19045.7184), Windows 11 23h2 (<10.0.22631.6936), 11 24h2 (<10.0.26100.8246), 11 25h2 (<10.0.26200.8246), 11 26h1 (<10.0.28000.1836), Server 2022 (<10.0.20348.5020), Server 2022 23h2 (<10.0.25398.2274)
    Affected if The installed Windows build number falls below the specified threshold for your Windows version
  2. Identify kernel log files present on the system
    Inspect common Windows log directories: %SystemRoot%\System32\winevt\Logs (Event Viewer logs), %SystemRoot%\Debug, %SystemRoot%\Logs, and any configured kernel debug logs. Use 'Get-ChildItem -Path $env:SystemRoot -Recurse -Filter "*.log" -ErrorAction SilentlyContinue' with appropriate permissions to enumerate log files.
    Affected if Kernel-related log files exist on the system, creating potential targets for the information disclosure
  3. Verify log file access permissions
    Run 'icacls <log_file_path>' on suspected kernel log files to inspect ACLs. Check for overly permissive settings that allow standard users or non-privileged accounts to read sensitive log files.
    Affected if Standard user accounts or unauthorized groups have read access to kernel log files that may contain sensitive information
  4. Audit recent log file access events
    Use Windows Event Viewer to search Security logs for Event ID 4663 (Object Access) or enable Advanced Audit Policy for 'File System' and review access to log directories. Alternatively, run 'Get-WinEvent -FilterHashtable @{LogName='Security';ID=4663} -MaxEvents 50' to review recent accesses.
    Affected if Unusual or unauthorized access to kernel log files is recorded, indicating active exploitation attempts

A user is affected if their Windows version is below the specified build threshold AND kernel log files exist on the system that could contain inadvertently disclosed sensitive information.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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.

dbcve · scoped
Upgrade available Upgrade to 10.0.19044.7184 / 10.0.19045.7184 / 10.0.20348.5020 or later
Fixed in 10.0.19044.718410.0.19045.718410.0.20348.5020
Interim mitigation

Apply the appropriate Microsoft security update for Windows Kernel when released. Ensure proper access controls on system log files and monitor for unauthorized access.

Recommended fix High confidence

Windows 10 21h2: 10.0.19044.7184 | Windows 10 22h2: 10.0.19045.7184 | Windows 11 23h2: 10.0.22631.6936 | Windows 11 24h2: 10.0.26100.8246 | Windows 11 25h2: 10.0.26200.8246 | Windows 11 26h1: 10.0.28000.1836 | Windows Server 2022: 10.0.20348.5020 | Windows Server 2022 23h2: 10.0.25398.2274

  1. Apply the latest Windows security updates from Windows Update or your organization's patch management system
  2. Verify the update was installed by checking the Windows version/build number matches or exceeds the fixed version for your Windows edition
  3. Confirm the update is listed in Windows Update History under security updates
Caveat Standard Windows security update; no expected breaking changes for this patch

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Windows 10 21h2 Scoped from the published advisory
  • Consultation2.0 h
  • Implementation1.0 h
  • Testing2.0 h
  • Review / QA1.0 h
6.0 hours of engineering $1,060
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Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2026-32218 — 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 sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2026-32218 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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