High 7.8Known exploited (CISA KEV)Published Jul 12, 2022

CVE-2022-22047Windows Client Server Run-time Subsystem (CSRSS) Elevation of Privilege Vulnerability

Updated under an hour ago (Oct 26, 2026, 11:50 PM ET)

Does this affect you?

It affects Microsoft Windows 10 Version 1809 and 22 other products. Add what you run to find out whether that includes you.

CISA lists it as known exploited since Jul 12, 2022; federal agencies had to remediate by Aug 2, 2022. Treat that date as your deadline.

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Every CVE for Microsoft Windows 10 Version 1809

Exploited in the last 30 days

Windows Client Server Run-time Subsystem (CSRSS) Elevation of Privilege Vulnerability

CVSS: 7.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C
Weakness (CWE): CWE-426
Known exploited: Added to CISA KEV Jul 12, 2022; federal remediation due Aug 2, 2022Apply updates per vendor instructions.
EPSS (exploitation in the next 30 days): 18.77% (percentile 97)
Assigned by: microsoft
NVD analysis: Analyzed
Record last updated: Oct 21, 2025
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Microsoft Windows 10 Version 1809 microsoft:windows_10_1809	from 10.0.17763.0 before 10.0.17763.3165	CNA record
Microsoft Windows Server 2019 microsoft:windows_server_2019 (from the name)	from 10.0.17763.0 before 10.0.17763.3165	CNA record
Microsoft Windows 10 Version 21H1 microsoft:windows_10_21h1	from 10.0.0 before 10.0.19043.1826	CNA record
Microsoft Windows Server 2022 microsoft:windows_server_2022 (from the name)	from 10.0.20348.0 before 10.0.20348.825	CNA record
Microsoft Windows 10 Version 20H2 microsoft:windows_10_20h2	from 10.0.0 before 10.0.19042.1826	CNA record
Microsoft Windows Server version 20H2 microsoft:windows_server_version_20h2 (from the name)	from 10.0.0 before 10.0.19042.1826	CNA record
Microsoft Windows 11 version 21H2 microsoft:windows_11_21h2	from 10.0.0 before 10.0.22000.795	CNA record
Microsoft Windows 10 Version 21H2 microsoft:windows_10_21h2	from 10.0.19043.0 before 10.0.19044.1826	CNA record
Microsoft Windows 10 Version 1507 microsoft:windows_10_1507	from 10.0.10240.0 before 10.0.10240.19360	CNA record
Microsoft Windows 10 Version 1607 microsoft:windows_10_1607	from 10.0.14393.0 before 10.0.14393.5246	CNA record
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References

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2022-22047	vendor-advisory, patch
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-22047	us-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.