dbcve.org
Windows 10 1507Operating system · Microsoft

CVE-2025-53808

MEDIUM · 6.7 CVSS v3.1 Published 2025-09-09
Fix available
A fix is available. Upgrade to 10.0.10240.21128 / 10.0.14393.8422 or later.
See remediation →
69/100
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
Access of resource using incompatible type ('type confusion') in Windows Defender Firewall Service allows an authorized attacker to elevate privileges 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

A type confusion vulnerability in the Windows Defender Firewall Service allows a local authenticated attacker to elevate privileges to SYSTEM level. The vulnerability stems from improper type handling when the service accesses certain resources, enabling a local user to manipulate memory or function pointers to execute code at a higher privilege level.

MitigationApply the Microsoft security update for CVE-2025-53808 via Windows Update or enterprise patch management systems. Verify that Windows Defender Firewall Service is running with appropriate service account restrictions after patching.

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:< 10.0.10240.21128
Windows 10 1607Operating system
Affected:< 10.0.14393.8422
Windows 10 1809Operating system
Affected:< 10.0.17763.7792
Windows 10 21h2Operating system
Affected:< 10.0.19044.6332
Windows 10 22h2Operating system
Affected:< 10.0.19045.6332
Windows 11 22h2Operating system
Affected:< 10.0.22621.5909
Windows 11 23h2Operating system
Affected:< 10.0.22631.5909
Windows 11 24h2Operating system
Affected:< 10.0.26100.6508

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
High
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:H/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. Determine Windows build version
    Run 'winver' from command prompt or execute 'systeminfo | findstr /B /C:"OS Name" /C:"OS Version"' to retrieve the full Windows version and build number.
    Affected if The build number falls below any of these thresholds: 10240.21128 (Win10 1507), 14393.8422 (Win10 1607), 17763.7792 (Win10 1809), 19044.6332 (Win10 21h2), 19045.6332 (Win10 22h2), 22621.5909 (Win11 22h2), 22631.5909 (Win11 23h2), or 26100.6508 (Win11 24h2).
  2. Verify Windows Defender Firewall Service status
    Open Services.msc and locate 'Windows Defender Firewall' (service name: MpsSvc) or run 'sc query MpsSvc' from an elevated command prompt.
    Affected if The service is running on an affected Windows build version as determined in the previous step.
  3. Confirm service runs under SYSTEM account
    Run 'sc qc MpsSvc' to query the service configuration, or view the service properties in Services.msc to verify the 'Log on as' setting.
    Affected if The service is configured to run under the LocalSystem (SYSTEM) account on an unpatched Windows version.
  4. Check for recent security updates
    Run 'powershell Get-HotFix | Where-Object {$_.Description -like "Security Update"} | Sort-Object InstalledOn -Descending | Select-Object -First 10' to list recent security patches.
    Affected if No security update matching May 2025 or later (or the specific KB for CVE-2025-53808) is installed on an affected Windows version.

A system is affected if it runs a Windows version with a build number below the thresholds listed and has the Windows Defender Firewall service running, as this creates the condition for local privilege escalation to 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 10.0.10240.21128 / 10.0.14393.8422 / 10.0.17763.7792 or later
Fixed in 10.0.10240.2112810.0.14393.842210.0.17763.7792
Interim mitigation

Apply the Microsoft security update for CVE-2025-53808 via Windows Update or enterprise patch management systems. Verify that Windows Defender Firewall Service is running with appropriate service account restrictions after patching.

Recommended fix High confidence

Windows 10 1507: 10.0.10240.21128 | Windows 10 1607: 10.0.14393.8422 | Windows 10 1809: 10.0.17763.7792 | Windows 10 21h2: 10.0.19044.6332 | Windows 10 22h2: 10.0.19045.6332 | Windows 11 22h2: 10.0.22621.5909 | Windows 11 23h2: 10.0.22631.5909 | Windows 11 24h2: 10.0.26100.6508

  1. Open Settings > Update & Security > Windows Update
  2. Click 'Check for updates' to download and install the latest security updates
  3. Alternatively, manually download the security update for your specific Windows version from the Microsoft Update Catalog (catalog.update.microsoft.com)
  4. Restart the computer after the update is installed
  5. Verify the installed build number matches or exceeds the fixed version for your Windows release

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

Fix this in Windows 10 1507 Scoped from the published advisory
  • Consultation2.0 h
  • Implementation4.0 h
  • Testing2.0 h
  • Review / QA1.0 h
9.0 hours of engineering $1,600
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $2,560.

Scan for this in your stack

Free · runs locally
dbcve dependency scanner

Check whether your project pulls in CVE-2025-53808 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.

Get it on GitHub Scan in the browser

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-2025-53808 in production — separate from our analysis above.

No notes yet

Be the first to add a field note for this CVE — a mitigation you’ve verified, a version caveat, or a link to a working fix. Sign in above to contribute.

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