CVE-2019-1129
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 · uneditedAn elevation of privilege vulnerability exists when Windows AppX Deployment Service (AppXSVC) improperly handles hard links, aka 'Windows Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2019-1130.
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 · high confidenceA local elevation of privilege vulnerability exists in Windows AppX Deployment Service (AppXSVC) due to improper handling of hard links. An authenticated local attacker could exploit this to gain elevated privileges by manipulating hard links during AppX package deployment operations.
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
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/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 checksWork through these to decide whether this CVE applies to you.
-
Identify Windows versionRun 'winver' or 'systeminfo | findstr /B /C:"OS Name" /C:"OS Version"' to determine the exact Windows version and buildAffected if The version matches Windows 10 1703, 1709, 1803, 1809, 1903, Windows Server 1803, Windows Server 1903, or Windows Server 2019
-
Verify AppXSVC service existsRun 'sc query AppXSVC' to query the status of the AppX Deployment ServiceAffected if The service exists and is running (state: RUNNING), indicating the vulnerable component is active
-
Check for hard link manipulation eventsOpen Event Viewer and navigate to Application and Services Logs > Microsoft > Windows > AppxDeploymentServer > Operational. Look for Event ID 500 or 501 entries around the time of suspected exploitationAffected if Event logs show unexpected or unauthorized AppX deployment operations involving hard links
-
Review AppX deployment audit eventsRun 'auditpol /get /subcategory:"Kernel Object"' and check Security event logs for Event ID 4656 (handle request) with ObjectType=HardLink on Appx packagesAffected if Audit logs reveal creation of hard links to AppX package files by non-system accounts
A system is affected if it runs any of the listed Windows 10 or Windows Server versions AND has the AppXSVC service enabled, with the vulnerability present until the corresponding security patch is applied.
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-2019-1129 via Windows Update or manual patch deployment to all affected Windows systems.
- Open Windows Update (Settings > Update & Security > Windows Update)
- Click 'Check for updates' to download and install the latest security updates
- Restart the computer if prompted after updates are installed
- Verify the update was successfully installed by checking Windows Update history
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation2.0 h
- Implementation4.0 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 $2,560.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2019-1129 — 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-2019-1129 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
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.
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