dbcve.org
Windows 10 1507Operating system · Microsoft

CVE-2025-26669

HIGH · 8.8 CVSS v3.1 Published 2025-04-08
Fix available
A fix is available. Upgrade to 10.0.10240.20978 / 10.0.14393.7969 or later.
See remediation →
95/100
Remediation priority · Urgent
Remotely reachable No privileges

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
Out-of-bounds read in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to disclose information 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

An out-of-bounds read vulnerability exists in Windows Routing and Remote Access Service (RRAS) that allows an unauthenticated attacker to read sensitive memory contents over the network, leading to information disclosure.

MitigationApply Microsoft security updates for RRAS as soon as they become available, and restrict network access to RRAS servers until patches can be deployed.

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:< 10.0.10240.20978
Windows 10 1607Operating system
Affected:< 10.0.14393.7969
Windows 10 1809Operating system
Affected:< 10.0.17763.7136
Windows 10 21h2Operating system
Affected:< 10.0.19044.5737
Windows 10 22h2Operating system
Affected:< 10.0.19045.5737
Windows 11 22h2Operating system
Affected:< 10.0.22621.5189
Windows 11 23h2Operating system
Affected:< 10.0.22631.5189
Windows 11 24h2Operating system
Affected:< 10.0.26100.3775

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
Low
Privileges
None
User interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/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. Confirm RRAS is installed
    Run 'Get-Service RemoteAccess' in PowerShell to check if the RemoteAccess service exists on the system. On Windows Server, also run 'Get-WindowsFeature -Name RemoteAccess' to verify the RRAS role is installed.
    Affected if The RemoteAccess service exists or the RRAS role is installed - the vulnerability only applies when RRAS is present and enabled.
  2. Check Windows version
    Run 'winver' or execute 'systeminfo | findstr /B /C:"OS Version"' to obtain the installed Windows version number.
    Affected if The version is lower than any of the following thresholds: 10.0.10240.20978 (Windows 10 1507), 10.0.14393.7969 (Windows 10 1607), 10.0.17763.7136 (Windows 10 1809), 10.0.19044.5737 (Windows 10 21h2), 10.0.19045.5737 (Windows 10 22h2), 10.0.22621.5189 (Windows 11 22h2), 10.0.22631.5189 (Windows 11 23
  3. Verify RRAS is running or configured
    Run 'Get-Service RemoteAccess | Select-Object Status,StartType' to check if the RRAS service is in a started state or configured to start.
    Affected if The service is running or set to start automatically, making the vulnerable code path accessible over the network.

The system is affected if RRAS (RemoteAccess service) is installed or enabled AND the Windows version falls below the listed thresholds for the corresponding Windows release.

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 10.0.10240.20978 / 10.0.14393.7969 / 10.0.17763.7136 or later
Fixed in 10.0.10240.2097810.0.14393.796910.0.17763.7136
Interim mitigation

Apply Microsoft security updates for RRAS as soon as they become available, and restrict network access to RRAS servers until patches can be deployed.

Recommended fix High confidence

Windows 10 1507: build 10.0.10240.20978 | Windows 10 1607: build 10.0.14393.7969 | Windows 10 1809: build 10.0.17763.7136 | Windows 10 21h2: build 10.0.19044.5737 | Windows 10 22h2: build 10.0.19045.5737 | Windows 11 22h2: build 10.0.22621.5189 | Windows 11 23h2: build 10.0.22631.5189 | Windows 11 2

  1. Open Settings > Update & Security > Windows Update and check for available updates
  2. Install all cumulative security updates for your Windows version
  3. Restart the system if prompted to complete the update installation
  4. Verify the update installed successfully by checking Windows Update history
  5. Confirm the installed OS build number meets 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
  • Testing8.0 h
  • Review / QA2.0 h
16.0 hours of engineering $2,680
Get the upgrade done

An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,288.

Scan for this in your stack

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dbcve dependency scanner

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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-2025-26669 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