CVE-2019-1129: Microsoft Windows AppX Deployment Service (AppXSVC) Privilege Escalation Vulnerability

CVE-2019-1129 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2022-03-15

An elevation of privilege vulnerability exists in the Microsoft Windows AppX Deployment Service (AppXSVC) due to improper handling of hard links. A local attacker could exploit this by following links to gain elevated process execution context on the affected system.

Technologies: Microsoft Windows. Vendors: Microsoft.

Quick answers

Is CVE-2019-1129 exploited in the wild?
Yes. CVE-2019-1129 is known to be exploited in the wild, first recorded on 15 March 2022. Treat it as urgent.
How severe is CVE-2019-1129?
Critical severity, with a CVSS score of 7.8, published 15 March 2022.
Which products and versions are affected?
Microsoft Windows 10 1703, 1709, 1803, 1809, 1903; Microsoft Windows Server 2016 1803, 1903; Microsoft Windows Server 2019 -.
Is there a fix for CVE-2019-1129?
A patch was published on 2019-07-15: Microsoft released security updates Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2019-1129 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2019-1129?
Check whether you run Microsoft Windows. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Affected products

  • Microsoft Windows 10 1703, 1709, 1803, 1809, 1903
  • Microsoft Windows Server 2016 1803, 1903
  • Microsoft Windows Server 2019 -

Timeline

  • 2019-07-15: disclosed: NVD Published Date
  • 2019-07-15: patched: Microsoft released security updates
  • 2022-03-15: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2022-03-15: exploited: Reported as exploited in the wild per CISA KEV entry

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