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TI-2023-08152 Aliases CVE-2023-21771GHSA-xwqg-3xfc-gp8v

Windows Local Session Manager (LSM) Elevation of Privilege Vulnerability

Priority LOW 33CWE-591Published · 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 Local Session Manager (LSM) Elevation of Privilege Vulnerability

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00408 35th percentileScored 2026-11-07
Fix Fixed Microsoft: 4 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 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
  • 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

CPE configurations NVD · 8

CPEVersionsRoleVendor
cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:*:*20h2VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10:21h2:*:*:*:*:*:*:*21h2VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_10:22h2:*:*:*:*:*:*:*22h2VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11:21h2:*:*:*:*:*:arm64:*21h2VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11:21h2:*:*:*:*:*:x64:*21h2VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11:22h2:*:*:*:*:*:arm64:*22h2VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_11:22h2:*:*:*:*:*:x64:*22h2VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:*not specified by NVDVulnerableMicrosoft
  • cpe:2.3:o:microsoft:windows_10:20h2:*:*:*:*:*:*:* Versions 20h2 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10:21h2:*:*:*:*:*:*:* Versions 21h2 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_10:22h2:*:*:*:*:*:*:* Versions 22h2 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11:21h2:*:*:*:*:*:arm64:* Versions 21h2 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11:21h2:*:*:*:*:*:x64:* Versions 21h2 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11:22h2:*:*:*:*:*:arm64:* Versions 22h2 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_11:22h2:*:*:*:*:*:x64:* Versions 22h2 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft

Remediation

Microsoft 4 updates

  • 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
  • KB5022291
    Security Update
    • Windows Server 2022 10.0.20348.1487
    • Windows Server 2022 (Server Core installation) 10.0.20348.1487
  • 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
Show 1 more Microsoft updates
  • 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
No
Publicly disclosed
—
Exploitability
Exploitation Less Likely

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-21771
  2. 2026-10-03 Alias added: GHSA-xwqg-3xfc-gp8v

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