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TI-2023-09243 Aliases CVE-2023-23400GHSA-fh3r-82wq-4j58

Windows DNS Server Remote Code Execution Vulnerability

Priority LOW 36CWE-122Published · Updated

Key facts

Attack vector
Network
Privileges required
High
User interaction
None
Attack complexity
Low
Impact type
Code execution
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 DNS Server Remote Code Execution Vulnerability

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01256 69th percentileScored 2026-11-07
Fix Fixed Microsoft: 6 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 201910.0.17763.0 to before 10.0.17763.413110.0.17763.4131Patch availableCNA
MicrosoftWindows Server 2019 (Server Core installation)10.0.17763.0 to before 10.0.17763.413110.0.17763.4131Patch availableCNA
MicrosoftWindows Server 202210.0.20348.0 to before 10.0.20348.160710.0.20348.1607Patch availableCNA
MicrosoftWindows Server 201610.0.14393.0 to before 10.0.14393.578610.0.14393.5786Patch availableCNA
MicrosoftWindows Server 2016 (Server Core installation)10.0.14393.0 to before 10.0.14393.578610.0.14393.5786Patch availableCNA
MicrosoftWindows Server 2012 R26.3.9600.0 to before 6.3.9600.208656.3.9600.20865Patch availableCNA
MicrosoftWindows Server 2012 R2 (Server Core installation)6.3.9600.0 to before 6.3.9600.208656.3.9600.20865Patch availableCNA
  • Windows Server 2019 VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.4131 Fixed in 10.0.17763.4131 Patch available CNA
  • Windows Server 2019 (Server Core installation) VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.4131 Fixed in 10.0.17763.4131 Patch available CNA
  • Windows Server 2022 VendorMicrosoft Affected 10.0.20348.0 to before 10.0.20348.1607 Fixed in 10.0.20348.1607 Patch available CNA
  • Windows Server 2016 VendorMicrosoft Affected 10.0.14393.0 to before 10.0.14393.5786 Fixed in 10.0.14393.5786 Patch available CNA
  • Windows Server 2016 (Server Core installation) VendorMicrosoft Affected 10.0.14393.0 to before 10.0.14393.5786 Fixed in 10.0.14393.5786 Patch available CNA
  • Windows Server 2012 R2 VendorMicrosoft Affected 6.3.9600.0 to before 6.3.9600.20865 Fixed in 6.3.9600.20865 Patch available CNA
  • Windows Server 2012 R2 (Server Core installation) VendorMicrosoft Affected 6.3.9600.0 to before 6.3.9600.20865 Fixed in 6.3.9600.20865 Patch available CNA

CPE configurations NVD · 4

CPEVersionsRoleVendor
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*r2VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*not specified by NVDVulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*not specified by NVDVulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:*not specified by NVDVulnerableMicrosoft
  • cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* Versions r2 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2022:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft

Remediation

Microsoft 6 updates

  • KB5023786
    Security Hotpatch Update
    • Windows Server 2022 10.0.20348.1602
    • Windows Server 2022 (Server Core installation) 10.0.20348.1602
  • KB5023765
    Monthly Rollup
    • Windows Server 2012 R2 6.3.9600.20865
    • Windows Server 2012 R2 (Server Core installation) 6.3.9600.20865
  • KB5023764
    Security Only
    • Windows Server 2012 R2 6.3.9600.20865
    • Windows Server 2012 R2 (Server Core installation) 6.3.9600.20865
Show 3 more Microsoft updates
  • KB5023705
    Security Update
    • Windows Server 2022 10.0.20348.1607
    • Windows Server 2022 (Server Core installation) 10.0.20348.1607
  • KB5023702
    Security Update
    • Windows 10 Version 1809 for 32-bit Systems 10.0.17763.4131
    • Windows 10 Version 1809 for ARM64-based Systems 10.0.17763.4131
    • Windows 10 Version 1809 for x64-based Systems 10.0.17763.4131
    • Windows Server 2019 10.0.17763.4131
    • Windows Server 2019 (Server Core installation) 10.0.17763.4131
  • KB5023697
    Security Update
    • Windows 10 Version 1607 for 32-bit Systems 10.0.14393.5786
    • Windows 10 Version 1607 for x64-based Systems 10.0.14393.5786
    • Windows Server 2016 10.0.14393.5786
    • Windows Server 2016 (Server Core installation) 10.0.14393.5786

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Remote Code Execution
Exploited
No
Publicly disclosed
—
Exploitability
Exploitation Less Likely

Timeline

  1. 2026-10-02 Threatist record created from CVE-2023-23400
  2. 2026-10-03 Alias added: GHSA-fh3r-82wq-4j58

References

Patch 1

  • TI-2025-36863 Windows Server Update Service (WSUS) Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-01431 Netlogon Elevation of Privilege Vulnerability KEVCVSS 3.1CRITICAL 10.0
  • TI-2020-01310 Improper input validation in Microsoft Windows Server KEVCVSS 3.1CRITICAL 10.0
  • TI-2017-06077 Microsoft Windows XP SP3, Windows XP x64 XP2, Windows Server 2003 SP2, Windows Vista… KEVCVSS 3.1CRITICAL 9.8
  • TI-2015-01465 HTTP.sys in Microsoft Windows 7 SP1, Windows Server 2008 R2 SP1, Windows 8, Windows 8.1… KEVCVSS 3.1CRITICAL 9.8
  • TI-2020-01009 Improper input validation in Microsoft Windows Server KEVCVSS 3.1CRITICAL 9.0
See all 5293 →

Sources

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