dbcve.org
Windows Server 2008Operating system · Microsoft

CVE-2025-47998

HIGH · 8.8 CVSS v3.1 Published 2025-07-08
Fix available
A fix is available. Upgrade to 10.0.14393.8246 / 10.0.17763.7558 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
Heap-based buffer overflow in Windows Routing and Remote Access Service (RRAS) allows an unauthorized attacker to execute code 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

Heap-based buffer overflow vulnerability in Windows Routing and Remote Access Service (RRAS) enables unauthenticated remote attackers to execute arbitrary code via network exploitation. The flaw exists in how RRAS handles network traffic, allowing heap memory corruption that can be leveraged for code execution.

MitigationApply Microsoft security updates for CVE-2025-47998 when available; if RRAS is not required, disable the service; ensure network segmentation and firewall rules restrict RRAS-related ports (default RPC/L2TP/IPSec ports) to minimize attack surface.

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 Server 2008Operating system
Affected:all versions= r2
Windows Server 2012Operating system
Affected:all versions= r2
Windows Server 2016Operating system
Affected:< 10.0.14393.8246
Windows Server 2019Operating system
Affected:< 10.0.17763.7558
Windows Server 2022Operating system
Affected:< 10.0.20348.3932
Windows Server 2022 23h2Operating system
Affected:< 10.0.25398.1732
Windows Server 2025Operating system
Affected:< 10.0.26100.4652

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. Verify RRAS role is installed on the server
    Open Server Manager, go to Manage > Add Roles and Features, check if 'Remote Access' role with 'Routing' role service is installed; or run Get-WindowsFeature -Name Routing in PowerShell
    Affected if RRAS role is installed and the server version falls within the affected build ranges
  2. Confirm RRAS service is running
    Run 'Get-Service RemoteAccess' in PowerShell or check Services.msc for the 'Remote Access' service status
    Affected if RemoteAccess service is in Running state
  3. Check Windows Server version and build number
    Run 'winver' or execute '[System.Environment]::OSVersion.Version' and 'systeminfo | findstr /B /C:"OS Name" /C:"OS Version"' in Command Prompt
    Affected if Version matches an affected release (2008/2012 all builds, 2016 < 10.0.14393.8246, 2019 < 10.0.17763.7558, 2022 < 10.0.20348.3932, 2022 23h2 < 10.0.25398.1732, 2025 < 10.0.26100.4652)
  4. Verify RRAS routing functionality is configured
    Open Routing and Remote Access snap-in (rrasmgmt.msc) or run 'netsh routing ip show config' to check if any routing interfaces are enabled
    Affected if RRAS has active routing interfaces configured and accepting network traffic

The server is affected if RRAS is installed and running on a Windows Server version with a build number below the thresholds listed for each supported 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 10.0.14393.8246 / 10.0.17763.7558 / 10.0.20348.3932 or later
Fixed in 10.0.14393.824610.0.17763.755810.0.20348.3932
Interim mitigation

Apply Microsoft security updates for CVE-2025-47998 when available; if RRAS is not required, disable the service; ensure network segmentation and firewall rules restrict RRAS-related ports (default RPC/L2TP/IPSec ports) to minimize attack surface.

Recommended fix High confidence

Windows Server 2016 build 10.0.14393.8246, Windows Server 2019 build 10.0.17763.7558, Windows Server 2022 build 10.0.20348.3932, Windows Server 2022 23h2 build 10.0.25398.1732, Windows Server 2025 build 10.0.26100.4652

  1. Apply the relevant Microsoft security update for this vulnerability (KB reference available via MSRC at msrc.microsoft.com)
  2. For Windows Server 2016 and later: Install the latest cumulative update that includes the fix for this RRAS vulnerability
  3. For Windows Server 2022: Ensure build is 10.0.20348.3932 or later
  4. For Windows Server 2022 23h2: Ensure build is 10.0.25398.1732 or later
  5. For Windows Server 2025: Ensure build is 10.0.26100.4652 or later
  6. For Windows Server 2019: Ensure build is 10.0.17763.7558 or later
  7. For Windows Server 2016: Ensure build is 10.0.14393.8246 or later
  8. Restart the server after applying the update
Caveat Security updates typically have low risk; test in staging before production deployment; Windows Server 2008/2012 are end-of-life with no patch available - upgrade to supported version

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

Fix this in Windows Server 2008 Scoped from the published advisory
  • Consultation3.0 h
  • Implementation4.0 h
  • Testing3.0 h
  • Review / QA2.0 h
12.0 hours of engineering $2,130
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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-2025-47998 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