# CVE-2022-21971

Windows Runtime Remote Code Execution Vulnerability

- Page: https://www.vulneraibility.com/cve/CVE-2022-21971
- CVSS: 7.8
- Known exploited: yes, in CISA KEV since 2022-08-18; CISA due date 2022-09-08
- EPSS: 53.93% (percentile 99.0)
- Unvetted proof-of-concept code on GitHub: 3 GitHub proofs of concept (first 2022-02-26)
- CISA SSVC: exploitation active, automatable no, technical impact total (assessed 2025-01-29)
- Weakness: CWE-824
- Published: 2022-02-09

## Affected versions

- Microsoft Windows 10 Version 1809: affected >= 10.0.17763.0 and < 10.0.17763.2565; >= 10.0.0 and < 10.0.17763.2565
- Microsoft Windows 10 Version 1909: affected >= 10.0.0 and < 10.0.18363.2094
- Microsoft Windows 10 Version 20H2: affected >= 10.0.0 and < 10.0.19042.1526
- Microsoft Windows 10 Version 21H1: affected >= 10.0.0 and < 10.0.19043.1526
- Microsoft Windows 10 Version 21H2: affected >= 10.0.19043.0 and < 10.0.19044.1526
- Microsoft Windows 11 version 21H2: affected >= 10.0.0 and < 10.0.22000.493
- Microsoft Windows Server 2019: affected >= 10.0.17763.0 and < 10.0.17763.2565
- Microsoft Windows Server 2019 (Server Core installation): affected >= 10.0.17763.0 and < 10.0.17763.2565
- Microsoft Windows Server 2022: affected >= 10.0.20348.0 and < 10.0.20348.524
- Microsoft Windows Server version 20H2: affected >= 10.0.0 and < 10.0.19042.1526

A version outside these ranges is not a statement that it is unaffected.

## References

- [advisory] https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21971
- [other] https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-21971

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Summary, impact and action are written by the vulneraibility.com AI analysis pipeline from the CVE record, NVD, CISA and FIRST data; verify against the references.