CVE-2019-1458: Microsoft Win32k Privilege Escalation Vulnerability

CVE-2019-1458 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2022-01-10

An elevation of privilege vulnerability exists in the Windows Win32k component due to improper handling of objects in memory. A local attacker could exploit this to gain elevated system privileges.

Technologies: Microsoft Win32K. Vendors: Microsoft.

Quick answers

Is CVE-2019-1458 exploited in the wild?
Yes. CVE-2019-1458 is known to be exploited in the wild, first recorded on 10 January 2022. Treat it as urgent.
How severe is CVE-2019-1458?
Critical severity, with a CVSS score of 7.8, published 10 January 2022.
Which products and versions are affected?
Microsoft Windows 7 SP1; Microsoft Windows 8.1; Microsoft Windows RT 8.1; Microsoft Windows 10 1507, 1607; and 3 more.
Is there a fix for CVE-2019-1458?
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-2019-1458 attacked?
It is attacked with local access, in an operating system.
Am I affected by CVE-2019-1458?
Check whether you run Microsoft Win32K. 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 SP1
  • Microsoft Windows 8.1
  • Microsoft Windows RT 8.1
  • Microsoft Windows 10 1507, 1607
  • Microsoft Windows Server 2008 SP2, R2 SP1
  • Microsoft Windows Server 2012 R2
  • Microsoft Windows Server 2016

Timeline

  • 2019-12-11: disclosed: Initial analysis by NIST
  • 2022-01-10: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2022-01-10: exploited: Confirmed exploited in the wild per CISA KEV catalog entry date

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