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TI-2022-21978 Aliases CVE-2022-44673GHSA-gjq9-gv86-9pf8

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

Priority MEDIUM 41Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
High
Impact type
Privilege escalation
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA and Microsoft. Impact type from Microsoft.

Summary

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

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.05245 92nd percentileScored 2026-11-07
Fix Fixed Microsoft: 10 updates

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftWindows 10 Version 180910.0.17763.0 to before 10.0.17763.377010.0.17763.3770Patch availableCNA
MicrosoftWindows 10 Version 21H110.0.0 to before 10.0.19043.236410.0.19043.2364Patch availableCNA
MicrosoftWindows 10 Version 20H210.0.0 to before 10.0.19042.236410.0.19042.2364Patch availableCNA
MicrosoftWindows 10 Version 21H210.0.19044.0 to before 10.0.19044.236410.0.19044.2364Patch availableCNA
MicrosoftWindows 10 Version 22H210.0.19045.0 to before 10.0.19045.236410.0.19045.2364Patch availableCNA
MicrosoftWindows 10 Version 150710.0.10240.0 to before 10.0.10240.1962410.0.10240.19624Patch availableCNA
MicrosoftWindows 10 Version 160710.0.14393.0 to before 10.0.14393.558210.0.14393.5582Patch availableCNA
MicrosoftWindows 76.1.0 to before 6.1.7601.262666.1.7601.26266Patch availableCNA
MicrosoftWindows 8.16.3.0 to before 6.3.9600.207216.3.9600.20721Patch availableCNA
MicrosoftWindows Server 2008 Service Pack 26.0.6003.0 to before 6.0.6003.218156.0.6003.21815Patch availableCNA
MicrosoftWindows Server 2008 Service Pack 2 (Server Core installation)6.0.6003.0 to before 6.0.6003.218156.0.6003.21815Patch availableCNA
  • Windows 10 Version 1809 VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.3770 Fixed in 10.0.17763.3770 Patch available CNA
  • Windows 10 Version 21H1 VendorMicrosoft Affected 10.0.0 to before 10.0.19043.2364 Fixed in 10.0.19043.2364 Patch available CNA
  • Windows 10 Version 20H2 VendorMicrosoft Affected 10.0.0 to before 10.0.19042.2364 Fixed in 10.0.19042.2364 Patch available CNA
  • Windows 10 Version 21H2 VendorMicrosoft Affected 10.0.19044.0 to before 10.0.19044.2364 Fixed in 10.0.19044.2364 Patch available CNA
  • Windows 10 Version 22H2 VendorMicrosoft Affected 10.0.19045.0 to before 10.0.19045.2364 Fixed in 10.0.19045.2364 Patch available CNA
  • Windows 10 Version 1507 VendorMicrosoft Affected 10.0.10240.0 to before 10.0.10240.19624 Fixed in 10.0.10240.19624 Patch available CNA
  • Windows 10 Version 1607 VendorMicrosoft Affected 10.0.14393.0 to before 10.0.14393.5582 Fixed in 10.0.14393.5582 Patch available CNA
  • Windows 7 VendorMicrosoft Affected 6.1.0 to before 6.1.7601.26266 Fixed in 6.1.7601.26266 Patch available CNA
  • Windows 8.1 VendorMicrosoft Affected 6.3.0 to before 6.3.9600.20721 Fixed in 6.3.9600.20721 Patch available CNA
  • Windows Server 2008 Service Pack 2 VendorMicrosoft Affected 6.0.6003.0 to before 6.0.6003.21815 Fixed in 6.0.6003.21815 Patch available CNA
  • Windows Server 2008 Service Pack 2 (Server Core installation) VendorMicrosoft Affected 6.0.6003.0 to before 6.0.6003.21815 Fixed in 6.0.6003.21815 Patch available CNA

CPE configurations NVD · 10

CPEVersionsRoleVendor
cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:x86:*not specified by NVDVulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:x86:*20h2VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:x86:*21h1VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10:21h2:*:*:*:*:*:x86:*21h2VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10:22h2:*:*:*:*:*:x86:*22h2VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:x86:*1607VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x86:*1809VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x86:*not specified by NVDVulnerableMicrosoft
cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x86:*not specified by NVDVulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x86:*not specified by NVDVulnerableMicrosoft
  • cpe:2.3:o:microsoft:windows_10:-:*:*:*:*:*:x86:* Versions not specified by NVD Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:x86:* Versions 20h2 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10:21h1:*:*:*:*:*:x86:* Versions 21h1 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10:21h2:*:*:*:*:*:x86:* Versions 21h2 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10:22h2:*:*:*:*:*:x86:* Versions 22h2 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10:1607:*:*:*:*:*:x86:* Versions 1607 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:x86:* Versions 1809 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:x86:* Versions not specified by NVD Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:x86:* Versions not specified by NVD Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:x86:* Versions not specified by NVD Vulnerable ·Microsoft

Remediation

Microsoft 10 updates

  • KB5021296
    Security Only
    • Windows 8.1 for 32-bit systems 6.3.9600.20721
    • Windows 8.1 for x64-based systems 6.3.9600.20721
    • Windows Server 2012 R2 6.3.9600.20721
    • Windows Server 2012 R2 (Server Core installation) 6.3.9600.20721
  • KB5021294
    Monthly Rollup
    • Windows 8.1 for 32-bit systems 6.3.9600.20721
    • Windows 8.1 for x64-based systems 6.3.9600.20721
    • Windows RT 8.1 6.3.9600.20721
    • Windows Server 2012 R2 6.3.9600.20721
    • Windows Server 2012 R2 (Server Core installation) 6.3.9600.20721
  • KB5021293
    Security Only
    • Windows Server 2008 for 32-bit Systems Service Pack 2 6.0.6003.21815
    • Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 6.0.6003.21815
    • Windows Server 2008 for x64-based Systems Service Pack 2 6.0.6003.21815
    • Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 6.0.6003.21815
Show 7 more Microsoft updates
  • KB5021291
    Monthly Rollup
    • Windows 7 for 32-bit Systems Service Pack 1 6.1.7601.26266
    • Windows 7 for x64-based Systems Service Pack 1 6.1.7601.26266
    • Windows Server 2008 R2 for x64-based Systems Service Pack 1 6.1.7601.26266
    • Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 6.1.7601.26266
  • KB5021289
    Monthly Rollup
    • Windows Server 2008 for 32-bit Systems Service Pack 2 6.0.6003.21815
    • Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation) 6.0.6003.21815
    • Windows Server 2008 for x64-based Systems Service Pack 2 6.0.6003.21815
    • Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation) 6.0.6003.21815
  • KB5021288
    Security Only
    • Windows 7 for 32-bit Systems Service Pack 1 6.1.7601.26266
    • Windows 7 for x64-based Systems Service Pack 1 6.1.7601.26266
    • Windows Server 2008 R2 for x64-based Systems Service Pack 1 6.1.7601.26266
    • Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation) 6.1.7601.26266
  • KB5021243
    Security Update
    • Microsoft .NET Framework 3.5 AND 4.6/4.6.2 10.0.10240.19624
    • Windows 10 for 32-bit Systems 10.0.10240.19624
    • Windows 10 for x64-based Systems 10.0.10240.19624
  • KB5021237
    Security Update
    • Windows 10 Version 1809 for 32-bit Systems 10.0.17763.3770
    • Windows 10 Version 1809 for ARM64-based Systems 10.0.17763.3770
    • Windows 10 Version 1809 for x64-based Systems 10.0.17763.3770
    • Windows Server 2019 10.0.17763.3770
    • Windows Server 2019 (Server Core installation) 10.0.17763.3770
  • KB5021235
    Security Update
    • Windows 10 Version 1607 for 32-bit Systems 10.0.14393.5582
    • Windows 10 Version 1607 for x64-based Systems 10.0.14393.5582
    • Windows Server 2016 10.0.14393.5582
    • Windows Server 2016 (Server Core installation) 10.0.14393.5582
  • KB5021233
    Security Update
    • Windows 10 Version 20H2 for 32-bit Systems 10.0.19042.2364
    • Windows 10 Version 20H2 for ARM64-based Systems 10.0.19042.2364
    • Windows 10 Version 21H1 for 32-bit Systems 10.0.19043.2364
    • Windows 10 Version 21H1 for ARM64-based Systems 10.0.19043.2364
    • Windows 10 Version 21H1 for x64-based Systems 10.0.19043.2364
    • Windows 10 Version 21H2 for 32-bit Systems 10.0.19044.2364
    • Windows 10 Version 21H2 for ARM64-based Systems 10.0.19044.2364
    • Windows 10 Version 21H2 for x64-based Systems 10.0.19044.2364
    • Windows 10 Version 22H2 for 32-bit Systems 10.0.19045.2364
    • Windows 10 Version 22H2 for ARM64-based Systems 10.0.19045.2364
    • Windows 10 Version 22H2 for x64-based Systems 10.0.19045.2364

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Elevation of Privilege
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation More Likely

Timeline

  1. 2026-10-02 Threatist record created from CVE-2022-44673
  2. 2026-10-03 Alias added: GHSA-gjq9-gv86-9pf8

References

Advisory 1

  • TI-2015-02132 Buffer underflow in atmfd.dll in the Windows Adobe Type Manager Library in Microsoft… KEVCVSS 3.1HIGH 8.8
  • TI-2022-10056 Remote Procedure Call Runtime Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2022-06273 HTTP Protocol Stack Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2019-00906 Remote Desktop Services Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2022-15533 Windows Internet Key Exchange (IKE) Protocol Extensions Remote Code Execution Vulnerability CVSS 3.1CRITICAL 9.8
  • TI-2015-01587 Mount Manager in Microsoft Windows Vista SP2, Windows Server 2008 SP2 and R2 SP1, Windows… KEVCVSS 3.1MEDIUM 6.6
See all 2973 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences