dbcve.org
Windows 10 1507Operating system · Microsoft

CVE-2025-33070

HIGH · 8.1 CVSS v3.1 Published 2025-06-10
Fix available
A fix is available. Upgrade to 10.0.10240.21034 / 10.0.14393.8148 or later.
See remediation →
90/100
Remediation priority · Urgent
Remotely reachable No privileges 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
Use of uninitialized resource in Windows Netlogon allows an unauthorized attacker to elevate privileges over a network.

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

Use of an uninitialized resource in Windows Netlogon enables an unauthorized attacker to elevate privileges over a network. This vulnerability resides in the Windows domain authentication service, potentially allowing attackers to gain elevated access without valid credentials.

MitigationApply Microsoft security updates for Windows Netlogon promptly; prioritize patching domain controllers and Windows servers in the Active Directory infrastructure.

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 1507Operating system
Affected:< 10.0.10240.21034
Windows 10 1607Operating system
Affected:< 10.0.14393.8148
Windows 10 1809Operating system
Affected:< 10.0.17763.7434
Windows 10 21h2Operating system
Affected:< 10.0.19044.5965
Windows 10 22h2Operating system
Affected:< 10.0.19045.5965
Windows 11 22h2Operating system
Affected:< 10.0.22621.5472
Windows 11 23h2Operating system
Affected:< 10.0.22631.5472
Windows 11 24h2Operating system
Affected:< 10.0.26100.4270

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
Network
Complexity
High
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:H/PR:N/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 checks

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

  1. Check Windows version and build number
    Run 'winver' or 'systeminfo | findstr /B /C:"OS Name" /C:"OS Version"' or 'reg query "HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion" /v CurrentBuild' to obtain the installed Windows build number
    Affected if The build number falls below any of these thresholds: 10240.21034 (1507), 14393.8148 (1607), 17763.7434 (1809), 19044.5965 (21h2), 19045.5965 (22h2), 22621.5472 (11 22h2), 22631.5472 (11 23h2), 26100.4270 (11 24h2)
  2. Verify Netlogon service is running
    Run 'sc query Netlogon' or 'Get-Service Netlogon' in PowerShell to check the status of the Netlogon service
    Affected if The Netlogon service is running or set to auto-start (state shows RUNNING) on an unpatched Windows version
  3. Confirm domain membership
    Run 'systeminfo | findstr /C:"Domain"' or 'Get-ADComputer -Identity $env:COMPUTERNAME -Properties * | Select-Object -ExpandProperty DNSHostName' (if RSAT tools installed) to check if the system is joined to a domain
    Affected if The system is joined to an Active Directory domain, as Netlogon is the domain authentication service where this vulnerability resides

You are affected if your Windows build number is below the thresholds listed AND the Netlogon service is running on a domain-joined system.

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 10.0.10240.21034 / 10.0.14393.8148 / 10.0.17763.7434 or later
Fixed in 10.0.10240.2103410.0.14393.814810.0.17763.7434
Interim mitigation

Apply Microsoft security updates for Windows Netlogon promptly; prioritize patching domain controllers and Windows servers in the Active Directory infrastructure.

Recommended fix High confidence

Upgrade to the latest Windows security update for your respective Windows 10/11 version that includes the CVE-2025-330370 fix (builds >= specified in steps above)

  1. Identify your current Windows version by running 'winver' or checking System Properties
  2. Open Settings > Update & Security > Windows Update
  3. Click 'Check for updates' and install all available updates
  4. For Windows 10 1507, upgrade to Windows 10 version 1507 build 10.0.10240.21034 or later
  5. For Windows 10 1607, upgrade to Windows 10 version 1607 build 10.0.14393.8148 or later
  6. For Windows 10 1809, upgrade to Windows 10 version 1809 build 10.0.17763.7434 or later
  7. For Windows 10 21h2, upgrade to Windows 10 version 21h2 build 10.0.19044.5965 or later
  8. For Windows 10 22h2, upgrade to Windows 10 version 22h2 build 10.0.19045.5965 or later
Caveat Standard Windows update risks - ensure backups and compatibility testing for critical systems before deployment

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

Fix this in Windows 10 1507 Scoped from the published advisory
  • Consultation6.0 h
  • Implementation12.0 h
  • Testing8.0 h
  • Review / QA4.0 h
30.0 hours of engineering $5,280
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $8,448.

Scan for this in your stack

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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-2025-33070 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