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High 7.8Known exploited (CISA KEV)Published Feb 9, 2022
CVE-2022-21971Windows Runtime Remote Code Execution Vulnerability
Updated under an hour ago ()
Does this affect you?
It affects Microsoft Windows 10 Version 1809 and 9 other products. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Aug 18, 2022; federal agencies had to remediate by Sep 8, 2022. Treat that date as your deadline.
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Windows Runtime Remote Code Execution Vulnerability
- CVSS
- 7.8 HIGH (v3.1, CNA)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
- Weakness (CWE)
- CWE-824
- Known exploited
- Added to CISA KEV Aug 18, 2022; federal remediation due Sep 8, 2022Apply updates per vendor instructions.
- EPSS (exploitation in the next 30 days)
- 53.93% (percentile 99)
- Assigned by
- microsoft
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Microsoft Windows 10 Version 1809 microsoft:windows_10_1809 | from 10.0.17763.0 before 10.0.17763.2565 | CNA record |
Microsoft Windows Server 2019 microsoft:windows_server_2019 (from the name) | from 10.0.17763.0 before 10.0.17763.2565 | CNA record |
Microsoft Windows 10 Version 1909 microsoft:windows_10_1909 | from 10.0.0 before 10.0.18363.2094 | CNA record |
Microsoft Windows 10 Version 21H1 microsoft:windows_10_21h1 | from 10.0.0 before 10.0.19043.1526 | CNA record |
Microsoft Windows Server 2022 microsoft:windows_server_2022 (from the name) | from 10.0.20348.0 before 10.0.20348.524 | CNA record |
Microsoft Windows 10 Version 20H2 microsoft:windows_10_20h2 | from 10.0.0 before 10.0.19042.1526 | CNA record |
Microsoft Windows Server version 20H2 microsoft:windows_server_version_20h2 (from the name) | from 10.0.0 before 10.0.19042.1526 | CNA record |
Microsoft Windows 11 version 21H2 microsoft:windows_11_21h2 | from 10.0.0 before 10.0.22000.493 | CNA record |
Microsoft Windows 10 Version 21H2 microsoft:windows_10_21h2 | from 10.0.19043.0 before 10.0.19044.1526 | CNA record |
microsoft windows_10_1809 microsoft:windows_10_1809 | before 10.0.17763.2565 | NVD |
microsoft windows_10_1909 microsoft:windows_10_1909 | before 10.0.18363.2094 | NVD |
microsoft windows_10_20h2 microsoft:windows_10_20h2 | before 10.0.19042.1526 | NVD |
microsoft windows_10_21h1 microsoft:windows_10_21h1 | before 10.0.19043.1526 | NVD |
microsoft windows_10_21h2 microsoft:windows_10_21h2 | before 10.0.19044.1526 | NVD |
microsoft windows_11_21h2 microsoft:windows_11_21h2 | before 10.0.22000.493 | NVD |
microsoft windows_server_2019 microsoft:windows_server_2019 | before 10.0.17763.2565 | NVD |
microsoft windows_server_2022 microsoft:windows_server_2022 | before 10.0.20348.524 | NVD |
microsoft windows_server_20h2 microsoft:windows_server_20h2 | before 10.0.19042.1526 | NVD |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-21971vendor-advisory, patch
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-21971us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.