Junglewise Threat Intelligence

CVE-2020-1027: Microsoft Windows Kernel Privilege Escalation Vulnerability

CVE-2020-1027 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2022-05-23

Technologies: Microsoft Windows 7, Microsoft Windows, Microsoft Windows 8.1, Microsoft Windows 10, Microsoft Windows Server 2012, Microsoft Windows Server 2019, Microsoft Windows Server 2016, Microsoft Windows Server 2008, Microsoft Windows Rt 8.1. Vendors: Microsoft.

Executive brief

An elevation of privilege vulnerability exists in the Windows Kernel due to improper handling of objects in memory, specifically involving an out-of-bounds write (CWE-787). A local attacker with low privileges could exploit this to execute code with elevated permissions. This vulnerability has been observed being exploited in the wild.

Affected products

  • Microsoft Windows 7 Service Pack 1
  • Microsoft Windows 8.1
  • Microsoft Windows RT 8.1
  • Microsoft Windows 10 1507, 1607, 1709, 1803, 1809, 1903, 1909
  • Microsoft Windows Server 2008 Service Pack 2, R2 Service Pack 1
  • Microsoft Windows Server 2012 Gold, R2
  • Microsoft Windows Server 2016
  • Microsoft Windows Server 2019
  • Microsoft Windows Server versions 1803, 1903, 1909

Timeline

  • 2020-04-15: advisory: Initial MSRC advisory publication
  • 2022-05-23: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2022-08-11: other: Public exploit code released on Packet Storm Security

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