CVE-2023-21682
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 · uneditedWindows Point-to-Point Protocol (PPP) Information Disclosure Vulnerability
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 confidenceWindows Point-to-Point Protocol (PPP) Information Disclosure vulnerability allowing an unauthenticated attacker to potentially obtain sensitive information via specially crafted network packets. The vulnerability exists in Windows PPP implementation.
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 dataall versionsall versionsall versionsall versionsall versionsall versionsall versionsall versionsCVSS 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
- None
- Scope
- Unchanged
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/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 checksWork through these to decide whether this CVE applies to you.
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Check Windows versionRun 'winver' or 'systeminfo | findstr /B /C:"OS Name" /C:"OS Version"' to identify your Windows version and build numberAffected if The version is Windows 7 (any build), Windows 10 1607, 1809, 20h2, 21h2, 22h2, Windows 11 21h2, or Windows 11 22h2
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Determine if PPP/RAS is installedCheck the Windows Features list for 'Remote Access Service' (RAS) or 'Routing and Remote Access' (RRAS), or inspect registry key HKLM\SYSTEM\CurrentControlSet\Services\RasMan for presenceAffected if The RAS/RRAS component is installed on the system
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Check for active PPP connectionsRun 'netsh interface show interface' or check Device Manager under Network Adapters for WAN Miniport (PPP) devicesAffected if A PPP-based connection (dial-up, VPN using PPP, or RAS) is configured or active
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Inspect RAS service configurationRun 'netsh ras show configuration' or check services.msc for Remote Access Auto Connection Manager and Remote Access Service startup statusAffected if The RAS services exist and are set to Manual or Automatic startup
You are affected if your Windows version matches one of the listed affected versions AND PPP/RAS components are present on the system, as the vulnerability lies in the Windows PPP implementation.
Generated from the published advisory. Verify against your own configuration.
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 · scopedApply the Microsoft security update for CVE-2023-21682 through standard Windows Update or patch management systems.
January 2023 Windows Security Updates (apply via Windows Update or Microsoft Update Catalog)
- Open Windows Update on the affected system (Settings > Update & Security > Windows Update)
- Click 'Check for updates' to download and install the latest security updates
- Restart the system if prompted to complete the installation
- Verify the update was installed by viewing the update history in Windows Update settings
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation2.0 h
- Testing2.0 h
- Review / QA1.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $1,984.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2023-21682 — 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 sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2023-21682 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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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.
- 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