CVE-2019-0543: Microsoft Windows Privilege Escalation Vulnerability

CVE-2019-0543 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2022-03-15

An elevation of privilege vulnerability exists in Microsoft Windows when the operating system improperly handles authentication requests. A local attacker who successfully exploits this vulnerability could run processes in an elevated context.

Technologies: Microsoft Windows. Vendors: Microsoft.

Quick answers

Is CVE-2019-0543 exploited in the wild?
Yes. CVE-2019-0543 is known to be exploited in the wild, first recorded on 15 March 2022. Treat it as urgent.
How severe is CVE-2019-0543?
Critical severity, with a CVSS score of 7.8, published 15 March 2022.
Which products and versions are affected?
Microsoft Windows 7; Microsoft Windows 8.1; Microsoft Windows RT 8.1; Microsoft Windows 10; and 6 more.
Is there a fix for CVE-2019-0543?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2019-0543 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2019-0543?
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 7
  • Microsoft Windows 8.1
  • Microsoft Windows RT 8.1
  • Microsoft Windows 10
  • Microsoft Windows Server 2008
  • Microsoft Windows Server 2008 R2
  • Microsoft Windows Server 2012
  • Microsoft Windows Server 2012 R2
  • Microsoft Windows Server 2016
  • Microsoft Windows Server 2019

Timeline

  • 2019-01-08: disclosed: Initial disclosure date based on MSRC/SecurityFocus records.
  • 2022-03-15: kev added: Added to CISA Known Exploited Vulnerabilities Catalog.
  • 2022-03-15: exploited: Confirmed as exploited in the wild.

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