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Exploited· due 2022-02-187.0highHighused in ransomware

CVE-2022-21882

Microsoft Windows 10 1809

Win32k Elevation of Privilege Vulnerability

Exploitation status

  • CISA has confirmed this is being exploited in the wild. That is an observation of real attacks, not a prediction.
  • It is known to have been used in ransomware campaigns.
  • US federal civilian agencies are required to remediate it by 2022-02-18. That deadline does not bind private companies, but it is a reasonable benchmark for how urgently CISA views it.
  • A vendor advisory or patch reference has been published.

Required action

Apply updates per vendor instructions.

CISA’s wording, unedited.

What the metrics mean

  • It is requires local access to the machine.
  • For an attacker who can reach it, exploitation depends on conditions outside the attacker's control.
  • To exploit it, an ordinary user account is needed.
  • Beyond that, no action by a user is required.

Scoring

CVSS
7.0 (v3.1)
Vector
CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness
CWE-787
Assigned by
secure@microsoft.com

Dates

Published
2022-01-11
Last modified
2026-08-15
Added to KEV
2022-02-04
Remediation due
2022-02-18
Sources
CISA KEV, NVD

Affected products

  • Microsoft Windows 10 1809- 10.0.17763.2452
  • Microsoft Windows 10 1909- 10.0.18363.2037
  • Microsoft Windows 10 20h2- 10.0.19042.1466
  • Microsoft Windows 10 21h1- 10.0.19043.1466
  • Microsoft Windows 10 21h2- 10.0.19044.1466
  • Microsoft Windows 11 21h2- 10.0.22000.434
  • Microsoft Windows Server 2019- 10.0.17763.2452
  • Microsoft Windows Server 2022- 10.0.20348.469
  • Microsoft Windows Server 20h2- 10.0.19042.1466

As listed in the NVD configuration data. Not a statement about your estate.

References