Junglewise Threat Intelligence

CVE-2022-21882: Microsoft Win32k Privilege Escalation Vulnerability

CVE-2022-21882 · Severity: critical · CVSS 7.8 · Exploited in the wild · Published 2022-02-04

Technologies: Microsoft Windows 10, Microsoft Windows 11, Microsoft Windows Server 2022, Microsoft Windows Server 2019, Microsoft Win32K. Vendors: Microsoft.

Executive brief

A privilege escalation vulnerability exists in the Microsoft Win32k kernel driver due to an out-of-bounds write (CWE-787) or offset confusion in ConsoleControl. An attacker with local access can exploit this to gain elevated system privileges.

Affected products

  • Microsoft Windows 10 1809, 1909, 20H2, 21H1, 21H2
  • Microsoft Windows 11 21H2
  • Microsoft Windows Server 2019
  • Microsoft Windows Server 2022
  • Microsoft Windows Server 20H2

Timeline

  • 2022-02-04: disclosed
  • 2022-02-04: kev added: Added to CISA Known Exploited Vulnerabilities Catalog
  • 2022-02-04: patched: Microsoft released security updates to address this vulnerability.
  • 2022-02-04: exploited: Reported as exploited in the wild.

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