Is CVE-2022-21882 being actively exploited?

Yes. CVE-2022-21882 is listed in the CISA Known Exploited Vulnerabilities (KEV) catalog, added on February 4, 2022.

What is the CVSS score for CVE-2022-21882?

CVE-2022-21882 has a CVSS 3.1 base score of 7.0 (HIGH).

CVE-2022-21882

HIGH · CVSS 7.0CISA KEV: actively exploitedEPSS 59.2%EU EUVD: exploited

Win32k Elevation of Privilege Vulnerability

Key facts

CVSS score: 7.0 (v3.1)
Severity: HIGH
CVSS vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-787
EPSS score: 59.2% (99th percentile)
In CISA KEV: Yes, added February 4, 2022
In EU EUVD: Yes (EUVD-2022-27038)
Published: January 11, 2022
NVD last modified: August 15, 2026
Status: Analyzed

CISA Known Exploited Vulnerability

Microsoft Win32k Privilege Escalation Vulnerability

Added to the KEV catalog on February 4, 2022; federal remediation due February 18, 2022. Known to be used in ransomware campaigns.

EU Vulnerability Database (EUVD)

This vulnerability is also tracked by ENISA as EUVD-2022-27038 in the EU Vulnerability Database. ENISA flags it as known exploited. Last updated in EUVD on August 15, 2026.

View on the EU Vulnerability Database

Affected products

microsoft / windows 10 1809
microsoft / windows 10 1809
microsoft / windows 10 1909
microsoft / windows 10 20h2
microsoft / windows 10 21h1
microsoft / windows 10 21h2
microsoft / windows 11 21h2
microsoft / windows server 2019
microsoft / windows server 2022
microsoft / windows server 20h2

Certified products that may be affected

1 FIPS 140 or Common Criteria certified product, from automated matching by sec-certs.org.

Microsoft Windows 10 version 1909 and Microsoft Windows Server version 1909 - Microsoft Corporation - Common Criteria 2019-47-INF-3134 - archived

References

http://packetstormsecurity.com/files/166169/Win32k-ConsoleControl-Offset-Confusion-Privilege-Escalation.html(Third Party Advisory, VDB Entry)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21882(Patch, Vendor Advisory)
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2022-21882(Patch, Vendor Advisory)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-21882(US Government Resource)

Last updated September 17, 2026 · Source: NVD, CISA KEV, FIRST.org EPSS

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