How severe is CVE-2022-21971?

CVE-2022-21971 has a CVSS 3.1 base score of 7.8 (HIGH). EPSS estimates a 53.9% probability of exploitation in the next 30 days. It is listed in the CISA Known Exploited Vulnerabilities catalog.

CVE-2022-21971: Windows Runtime Remote Code Execution

CISA Known Exploited Vulnerabilities

Microsoft Windows Runtime Remote Code Execution Vulnerability is confirmed as actively exploited and is listed in the CISA KEV catalog.

Added to KEV

2022-08-18

Remediation due

2022-09-08

Required action
Apply updates per vendor instructions.

CISA notes
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21971; https://nvd.nist.gov/vuln/detail/CVE-2022-21971

Description

Windows Runtime Remote Code Execution Vulnerability

Severity

CVSS 3.1 · CNA7.8 HIGH

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

SSVC · CISA-ADP

Exploitationactive

Automatableno

Technical impacttotal

Affected Products

Vendor	Product	Affected versions
Microsoft	Windows 10 Version 1809	10.0.17763.0 to <10.0.17763.2565
Microsoft	Windows 10 Version 1809	10.0.0 to <10.0.17763.2565
Microsoft	Windows Server 2019	10.0.17763.0 to <10.0.17763.2565
Microsoft	Windows Server 2019 (Server Core installation)	10.0.17763.0 to <10.0.17763.2565
Microsoft	Windows 10 Version 1909	10.0.0 to <10.0.18363.2094
Microsoft	Windows 10 Version 21H1	10.0.0 to <10.0.19043.1526
Microsoft	Windows Server 2022	10.0.20348.0 to <10.0.20348.524
Microsoft	Windows 10 Version 20H2	10.0.0 to <10.0.19042.1526
Microsoft	Windows Server version 20H2	10.0.0 to <10.0.19042.1526
Microsoft	Windows 11 version 21H2	10.0.0 to <10.0.22000.493
Microsoft	Windows 10 Version 21H2	10.0.19043.0 to <10.0.19044.1526

References

1 Links

Vendor advisories

Windows Runtime Remote Code Execution Vulnerability

Record Details

Published

2022-02-09

Last updated

2025-10-21

Assigner (CNA)

microsoft

Credited to

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CVE record data © The MITRE Corporation, used under the CVE Terms of Use. Exploited-in-the-wild data from the CISA Known Exploited Vulnerabilities catalog (CC0). Exploit prediction scores by FIRST EPSS (first.org/epss). This site is not endorsed or certified by MITRE, NVD, CISA, or FIRST.