Junglewise Threat Intelligence

CVE-2020-17087: Microsoft Windows Kernel Privilege Escalation Vulnerability

CVE-2020-17087 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2021-11-03

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

Executive brief

The Microsoft Windows kernel contains a local elevation of privilege vulnerability due to incorrect calculation of buffer sizes (CWE-131). An attacker who successfully exploits this vulnerability could gain elevated system privileges.

Affected products

  • Microsoft Windows 7 Service Pack 1
  • Microsoft Windows 8.1
  • Microsoft Windows RT 8.1
  • Microsoft Windows 10 1507, 1607, 1803, 1809, 1903, 1909, 2004, 20H2
  • Microsoft Windows Server 2008 Service Pack 2, R2 Service Pack 2
  • Microsoft Windows Server 2012 R2
  • Microsoft Windows Server 2016 1903, 1909, 2004, 20H2
  • Microsoft Windows Server 2019

Timeline

  • 2020-11-16: disclosed: Initial analysis by NIST
  • 2021-11-03: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2024-11-21: patched: Microsoft advisory updated/referenced
  • 2021-11-03: advisory: Publication date of the vulnerability record

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