CISA KEV · Known exploitedHigh

CVE-2022-21919

Microsoft Windows

CVE-2022-21919 affects Microsoft Windows. Review the CVSS score, exploitation signals, affected versions, remediation status, and linked source material before making a change.

CVSS: 7
EPSS: 2.95%
CISA KEV: Listed
Published: 2022.01.12

PRIORITY ASSESSMENT

Immediate review

CISA has listed this vulnerability in the Known Exploited Vulnerabilities catalog.

Known exploitationConfirmed by CISA KEV

Exploit probability2.95%

Technical severityCVSS 7

Vulnerability overview

CVE-2022-21919 affects Microsoft Windows. Review the CVSS score, exploitation signals, affected versions, remediation status, and linked source material before making a change.

Affected product and versions

Product: Microsoft Windows
Affected versions: 10.0.17763.0, 10.0.0, 10.0.20348.0, 10.0.19043.0, 10.0.10240.0, 10.0.14393.0, 6.1.0, 6.3.0, 6.0.6003.0, 6.1.7601.0, 6.2.9200.0, 6.3.9600.0, < 10.0.10240.19177, < 10.0.14393.4886, < 10.0.17763.2452, < 10.0.18363.2037, < 10.0.19042.1466, < 10.0.19043.1466, < 10.0.19044.1466, < 10.0.22000.434
Fixed versions: 10.0.10240.19177, 10.0.14393.4886, 10.0.17763.2452, 10.0.18363.2037, 10.0.19042.1466, 10.0.19043.1466, 10.0.19044.1466, 10.0.22000.434, 10.0.20348.469

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

CISA required action

Apply updates per vendor instructions.

Due date: 2022.05.16

1
Identify
Confirm that Microsoft Windows and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE: CWE-1386, CWE-59
KEV added: 2022.04.25
Ransomware use: 미확인