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TI-2023-08061 Aliases CVE-2023-21674GHSA-hqxf-h392-6m7w

Windows Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability

Priority CRITICAL 97Exploited in the wildCWE-416Published · Updated

Key facts

Attack vector
Local
Privileges required
Low
User interaction
None
Attack complexity
Low
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 Advanced Local Procedure Call (ALPC) Elevation of Privilege Vulnerability

Why it matters now

Exploitation Active In CISA KEV since 2023-01-10CISA due date 2023-01-31
EPSS 0.34206 98th percentileScored 2026-11-07
Fix Fixed Microsoft: 9 updates

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Active
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 10.0.17763.388710.0.17763.3887Patch availableCNA
MicrosoftWindows 10 Version 180910.0.0 to before 10.0.17763.388710.0.17763.3887Patch availableCNA
MicrosoftWindows Server 201910.0.17763.0 to before 10.0.17763.388710.0.17763.3887Patch availableCNA
MicrosoftWindows Server 2019 (Server Core installation)10.0.17763.0 to before 10.0.17763.388710.0.17763.3887Patch availableCNA
MicrosoftWindows Server 202210.0.20348.0 to before 10.0.20348.148710.0.20348.1487Patch availableCNA
MicrosoftWindows 10 Version 20H210.0.0 to before 10.0.19042.248610.0.19042.2486Patch availableCNA
MicrosoftWindows 11 version 21H210.0.0 to before 10.0.22000.145510.0.22000.1455Patch availableCNA
MicrosoftWindows 10 Version 21H210.0.19043.0 to before 10.0.19044.248610.0.19044.2486Patch availableCNA
MicrosoftWindows 11 version 22H210.0.22621.0 to before 10.0.22621.110510.0.22621.1105Patch availableCNA
MicrosoftWindows 10 Version 22H210.0.19045.0 to before 10.0.19045.248610.0.19045.2486Patch availableCNA
MicrosoftWindows 10 Version 150710.0.10240.0 to before 10.0.10240.1968510.0.10240.19685Patch availableCNA
MicrosoftWindows 10 Version 160710.0.14393.0 to before 10.0.14393.564810.0.14393.5648Patch availableCNA
MicrosoftWindows Server 201610.0.14393.0 to before 10.0.14393.564810.0.14393.5648Patch availableCNA
MicrosoftWindows Server 2016 (Server Core installation)10.0.14393.0 to before 10.0.14393.564810.0.14393.5648Patch availableCNA
MicrosoftWindows 8.16.3.0 to before 6.3.9600.207786.3.9600.20778Patch availableCNA
MicrosoftWindows Server 2012 R26.3.9600.0 to before 6.3.9600.207786.3.9600.20778Patch availableCNA
MicrosoftWindows Server 2012 R2 (Server Core installation)6.3.9600.0 to before 6.3.9600.207786.3.9600.20778Patch availableCNA
  • Windows 10 Version 1809 VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.3887 Fixed in 10.0.17763.3887 Patch available CNA
  • Windows 10 Version 1809 VendorMicrosoft Affected 10.0.0 to before 10.0.17763.3887 Fixed in 10.0.17763.3887 Patch available CNA
  • Windows Server 2019 VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.3887 Fixed in 10.0.17763.3887 Patch available CNA
  • Windows Server 2019 (Server Core installation) VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.3887 Fixed in 10.0.17763.3887 Patch available CNA
  • Windows Server 2022 VendorMicrosoft Affected 10.0.20348.0 to before 10.0.20348.1487 Fixed in 10.0.20348.1487 Patch available CNA
  • Windows 10 Version 20H2 VendorMicrosoft Affected 10.0.0 to before 10.0.19042.2486 Fixed in 10.0.19042.2486 Patch available CNA
  • Windows 11 version 21H2 VendorMicrosoft Affected 10.0.0 to before 10.0.22000.1455 Fixed in 10.0.22000.1455 Patch available CNA
  • Windows 10 Version 21H2 VendorMicrosoft Affected 10.0.19043.0 to before 10.0.19044.2486 Fixed in 10.0.19044.2486 Patch available CNA
  • Windows 11 version 22H2 VendorMicrosoft Affected 10.0.22621.0 to before 10.0.22621.1105 Fixed in 10.0.22621.1105 Patch available CNA
  • Windows 10 Version 22H2 VendorMicrosoft Affected 10.0.19045.0 to before 10.0.19045.2486 Fixed in 10.0.19045.2486 Patch available CNA
  • Windows 10 Version 1507 VendorMicrosoft Affected 10.0.10240.0 to before 10.0.10240.19685 Fixed in 10.0.10240.19685 Patch available CNA
  • Windows 10 Version 1607 VendorMicrosoft Affected 10.0.14393.0 to before 10.0.14393.5648 Fixed in 10.0.14393.5648 Patch available CNA
  • Windows Server 2016 VendorMicrosoft Affected 10.0.14393.0 to before 10.0.14393.5648 Fixed in 10.0.14393.5648 Patch available CNA
  • Windows Server 2016 (Server Core installation) VendorMicrosoft Affected 10.0.14393.0 to before 10.0.14393.5648 Fixed in 10.0.14393.5648 Patch available CNA
  • Windows 8.1 VendorMicrosoft Affected 6.3.0 to before 6.3.9600.20778 Fixed in 6.3.9600.20778 Patch available CNA
  • Windows Server 2012 R2 VendorMicrosoft Affected 6.3.9600.0 to before 6.3.9600.20778 Fixed in 6.3.9600.20778 Patch available CNA
  • Windows Server 2012 R2 (Server Core installation) VendorMicrosoft Affected 6.3.9600.0 to before 6.3.9600.20778 Fixed in 6.3.9600.20778 Patch available CNA

CPE configurations NVD · 13

CPEVersionsRoleVendor
cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:*:*before 10.0.10240.19685VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:*:*before 10.0.14393.5648VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:*before 10.0.17763.3887VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:*before 10.0.19042.2486VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:*before 10.0.19044.2486VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:*before 10.0.19045.2486VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_21h2:*:*:*:*:*:*:*:*before 10.0.22000.1455VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:*before 10.0.22621.1105VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*not specified by NVDVulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*r2VulnerableMicrosoft
  • cpe:2.3:o:microsoft:windows_10_1507:*:*:*:*:*:*:*:* Versions before 10.0.10240.19685 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_1607:*:*:*:*:*:*:*:* Versions before 10.0.14393.5648 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_1809:*:*:*:*:*:*:*:* Versions before 10.0.17763.3887 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_20h2:*:*:*:*:*:*:*:* Versions before 10.0.19042.2486 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_21h2:*:*:*:*:*:*:*:* Versions before 10.0.19044.2486 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10_22h2:*:*:*:*:*:*:*:* Versions before 10.0.19045.2486 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_21h2:*:*:*:*:*:*:*:* Versions before 10.0.22000.1455 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11_22h2:*:*:*:*:*:*:*:* Versions before 10.0.22621.1105 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* Versions r2 Vulnerable ·Microsoft
Show 3 more CPE
CPEVersionsRoleVendor
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*before 10.0.14393.5648VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*before 10.0.17763.3887VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*before 10.0.20348.1487VulnerableMicrosoft
  • cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* Versions before 10.0.14393.5648 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* Versions before 10.0.17763.3887 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* Versions before 10.0.20348.1487 Vulnerable ·Microsoft

Remediation

Microsoft 9 updates

  • KB5022352
    Monthly Rollup
    • Windows 8.1 for 32-bit systems 6.3.9600.20778
    • Windows 8.1 for x64-based systems 6.3.9600.20778
    • Windows Server 2012 R2 6.3.9600.20778
    • Windows Server 2012 R2 (Server Core installation) 6.3.9600.20778
  • KB5022346
    Security Only
    • Windows 8.1 for 32-bit systems 6.3.9600.20778
    • Windows 8.1 for x64-based systems 6.3.9600.20778
    • Windows RT 8.1 6.3.9600.20778
    • Windows Server 2012 R2 6.3.9600.20778
    • Windows Server 2012 R2 (Server Core installation) 6.3.9600.20778
  • KB5022303
    Security Update
    • Windows 11 Version 22H2 for ARM64-based Systems 10.0.22621.1105
    • Windows 11 Version 22H2 for x64-based Systems 10.0.22621.1105
Show 6 more Microsoft updates
  • KB5022297
    Security Update
    • Windows 10 for 32-bit Systems 10.0.10240.19685
    • Windows 10 for x64-based Systems 10.0.10240.19685
  • KB5022291
    Security Update
    • Windows Server 2022 10.0.20348.1487
    • Windows Server 2022 (Server Core installation) 10.0.20348.1487
  • KB5022289
    Security Update
    • Windows 10 Version 1607 for 32-bit Systems 10.0.14393.5648
    • Windows 10 Version 1607 for x64-based Systems 10.0.14393.5648
    • Windows Server 2016 10.0.14393.5648
    • Windows Server 2016 (Server Core installation) 10.0.14393.5648
  • KB5022287
    Security Update
    • Windows 11 version 21H2 for ARM64-based Systems 10.0.22000.1455
    • Windows 11 version 21H2 for x64-based Systems 10.0.22000.1455
  • KB5022286
    Security Update
    • Windows 10 Version 1809 for 32-bit Systems 10.0.17763.3887
    • Windows 10 Version 1809 for ARM64-based Systems 10.0.17763.3887
    • Windows 10 Version 1809 for x64-based Systems 10.0.17763.3887
    • Windows Server 2019 10.0.17763.3887
    • Windows Server 2019 (Server Core installation) 10.0.17763.3887
  • KB5022282
    Security Update
    • Windows 10 Version 20H2 for 32-bit Systems 10.0.19042.2486
    • Windows 10 Version 20H2 for ARM64-based Systems 10.0.19042.2486
    • Windows 10 Version 21H2 for 32-bit Systems 10.0.19044.2486
    • Windows 10 Version 21H2 for ARM64-based Systems 10.0.19044.2486
    • Windows 10 Version 21H2 for x64-based Systems 10.0.19044.2486
    • Windows 10 Version 22H2 for 32-bit Systems 10.0.19045.2486
    • Windows 10 Version 22H2 for ARM64-based Systems 10.0.19045.2486
    • Windows 10 Version 22H2 for x64-based Systems 10.0.19045.2486

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Elevation of Privilege
Exploited
Yes
Publicly disclosed
—
Exploitability
Exploitation Detected

Timeline

  1. 2023-01-10 Added to CISA KEV
  2. 2026-10-02 Threatist record created from CVE-2023-21674
  3. 2026-10-03 Alias added: GHSA-hqxf-h392-6m7w

References

Patch 1

  • TI-2017-06077 Microsoft Windows XP SP3, Windows XP x64 XP2, Windows Server 2003 SP2, Windows Vista… KEVCVSS 3.1CRITICAL 9.8
  • TI-2025-24062 Windows SMB Client Elevation of Privilege Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2025-24042 Internet Shortcut Files Remote Code Execution Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2024-32708 Windows Task Scheduler Elevation of Privilege Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2024-29106 Windows MSHTML Platform Spoofing Vulnerability KEVCVSS 3.1HIGH 8.8
  • TI-2024-19802 Windows MSHTML Platform Security Feature Bypass Vulnerability KEVCVSS 3.1HIGH 8.8
See all 1229 →

Sources

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