Reference page — cumulative record through Wednesday, October 7, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2022-21971

CVE-2022-21971HIGH

Microsoft Windows 10 Version 1809 — Windows Runtime Remote Code Execution Vulnerability

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   N   R  U  H  H  H    7.8   .5393   99.0   YES

AFFECTED
  Product                                         Versions        Fixed
  Windows 10 Version 1809                         10.0.17763.0 –  —
  Windows 10 Version 1809                         10.0.0 –        —
  Windows Server 2019                             10.0.17763.0 –  —
  Windows Server 2019 (Server Core installation)  10.0.17763.0 –  —
  Windows 10 Version 1909                         10.0.0 –        —
  Windows 10 Version 21H1                         10.0.0 –        —
  Windows Server 2022                             10.0.20348.0 –  —
  Windows 10 Version 20H2                         10.0.0 –        —
  Windows Server version 20H2                     10.0.0 –        —
  Windows 11 version 21H2                         10.0.0 –        —
  + 1 more

TIMELINE
  Dec 16  Reserved by microsoft
  Feb 9   Published (CNA: microsoft)
  Aug 18  Added to CISA KEV, remediation due 2022-09-08

CWE-824 · CNA: microsoft · CVSS v3.1 · 2 references · KEV due September 8, 2022

Description

Windows Runtime Remote Code Execution Vulnerability

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
December 16, 2021	Reserved	Reserved by microsoft
February 9, 2022	Published	Published (CNA: microsoft)
August 18, 2022	KEV ADDED	Added to CISA KEV, remediation due 2022-09-08

Affected

Affected products and packages — 11 rows
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Microsoft	Windows 10 Version 1809	—	10.0.17763.0	—
Microsoft	Windows 10 Version 1809	—	10.0.0	—
Microsoft	Windows Server 2019	—	10.0.17763.0	—
Microsoft	Windows Server 2019 (Server Core installation)	—	10.0.17763.0	—
Microsoft	Windows 10 Version 1909	—	10.0.0	—
Microsoft	Windows 10 Version 21H1	—	10.0.0	—
Microsoft	Windows Server 2022	—	10.0.20348.0	—
Microsoft	Windows 10 Version 20H2	—	10.0.0	—
Microsoft	Windows Server version 20H2	—	10.0.0	—
Microsoft	Windows 11 version 21H2	—	10.0.0	—
Microsoft	Windows 10 Version 21H2	—	10.0.19043.0	—

Weaknesses

CWE-824

References (2)

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

Authoritative record: CVE-2022-21971 at cve.org

Vendors: microsoft

Weaknesses: CWE-824

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2022-21971 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Wednesday, October 7, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.