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TI-2026-34865 Aliases CVE-2026-47288GHSA-f3mm-ch2c-m27j

Windows Kerberos Key Distribution Center (KDC) Remote Code Execution

Priority LOW 34CWE-190Published · Updated

Key facts

Attack vector
Adjacent network
Privileges required
Low
User interaction
None
Attack complexity
High
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

Integer overflow or wraparound in Windows Kerberos allows an authorized attacker to execute code over an adjacent network.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00499 42nd 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 20126.2.9200.0 to before 6.2.9200.261326.2.9200.26132Patch availableCNA
MicrosoftWindows Server 2012 (Server Core installation)6.2.9200.0 to before 6.2.9200.261326.2.9200.26132Patch availableCNA
MicrosoftWindows Server 2012 R26.3.9600.0 to before 6.3.9600.232286.3.9600.23228Patch availableCNA
MicrosoftWindows Server 2012 R2 (Server Core installation)6.3.9600.0 to before 6.3.9600.232286.3.9600.23228Patch availableCNA
MicrosoftWindows Server 201610.0.14393.0 to before 10.0.14393.923410.0.14393.9234Patch availableCNA
MicrosoftWindows Server 2016 (Server Core installation)10.0.14393.0 to before 10.0.14393.923410.0.14393.9234Patch availableCNA
MicrosoftWindows Server 201910.0.17763.0 to before 10.0.17763.888010.0.17763.8880Patch availableCNA
MicrosoftWindows Server 2019 (Server Core installation)10.0.17763.0 to before 10.0.17763.888010.0.17763.8880Patch availableCNA
MicrosoftWindows Server 202210.0.20348.0 to before 10.0.20348.525610.0.20348.5256Patch availableCNA
MicrosoftWindows Server 202510.0.26100.0 to before 10.0.26100.3299510.0.26100.32995Patch availableCNA
MicrosoftWindows Server 2025 (Server Core installation)10.0.26100.0 to before 10.0.26100.3299510.0.26100.32995Patch availableCNA
  • Windows Server 2012 VendorMicrosoft Affected 6.2.9200.0 to before 6.2.9200.26132 Fixed in 6.2.9200.26132 Patch available CNA
  • Windows Server 2012 (Server Core installation) VendorMicrosoft Affected 6.2.9200.0 to before 6.2.9200.26132 Fixed in 6.2.9200.26132 Patch available CNA
  • Windows Server 2012 R2 VendorMicrosoft Affected 6.3.9600.0 to before 6.3.9600.23228 Fixed in 6.3.9600.23228 Patch available CNA
  • Windows Server 2012 R2 (Server Core installation) VendorMicrosoft Affected 6.3.9600.0 to before 6.3.9600.23228 Fixed in 6.3.9600.23228 Patch available CNA
  • Windows Server 2016 VendorMicrosoft Affected 10.0.14393.0 to before 10.0.14393.9234 Fixed in 10.0.14393.9234 Patch available CNA
  • Windows Server 2016 (Server Core installation) VendorMicrosoft Affected 10.0.14393.0 to before 10.0.14393.9234 Fixed in 10.0.14393.9234 Patch available CNA
  • Windows Server 2019 VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.8880 Fixed in 10.0.17763.8880 Patch available CNA
  • Windows Server 2019 (Server Core installation) VendorMicrosoft Affected 10.0.17763.0 to before 10.0.17763.8880 Fixed in 10.0.17763.8880 Patch available CNA
  • Windows Server 2022 VendorMicrosoft Affected 10.0.20348.0 to before 10.0.20348.5256 Fixed in 10.0.20348.5256 Patch available CNA
  • Windows Server 2025 VendorMicrosoft Affected 10.0.26100.0 to before 10.0.26100.32995 Fixed in 10.0.26100.32995 Patch available CNA
  • Windows Server 2025 (Server Core installation) VendorMicrosoft Affected 10.0.26100.0 to before 10.0.26100.32995 Fixed in 10.0.26100.32995 Patch available CNA

CPE configurations NVD · 6

CPEVersionsRoleVendor
cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*not specified by NVDVulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*r2VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:*before 10.0.14393.9234VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:*before 10.0.17763.8880VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:*before 10.0.20348.5256VulnerableMicrosoft
cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:x64:*before 10.0.26100.32995VulnerableMicrosoft
  • cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:* Versions r2 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2016:*:*:*:*:*:*:*:* Versions before 10.0.14393.9234 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2019:*:*:*:*:*:*:*:* Versions before 10.0.17763.8880 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2022:*:*:*:*:*:*:*:* Versions before 10.0.20348.5256 Vulnerable ·Microsoft
  • cpe:2.3:o:microsoft:windows_server_2025:*:*:*:*:*:*:x64:* Versions before 10.0.26100.32995 Vulnerable ·Microsoft

Remediation

Microsoft 6 updates

  • KB5094128
    Security Update
    • Windows Server 2022 10.0.20348.5256
    • Windows Server 2022 (Server Core installation) 10.0.20348.5256
  • KB5094125
    Security Update
    • Windows Server 2025 10.0.26100.32995
    • Windows Server 2025 (Server Core installation) 10.0.26100.32995
  • KB5094123
    Security Update
    • Windows 10 Version 1809 for 32-bit Systems 10.0.17763.8880
    • Windows 10 Version 1809 for x64-based Systems 10.0.17763.8880
    • Windows Server 2019 10.0.17763.8880
    • Windows Server 2019 (Server Core installation) 10.0.17763.8880
Show 3 more Microsoft updates
  • KB5094122
    Security Update
    • Windows 10 Version 1607 for 32-bit Systems 10.0.14393.9234
    • Windows 10 Version 1607 for x64-based Systems 10.0.14393.9234
    • Windows Server 2016 10.0.14393.9234
    • Windows Server 2016 (Server Core installation) 10.0.14393.9234
  • KB5094042
    Monthly Rollup
    • Windows Server 2012 6.2.9200.26132
    • Windows Server 2012 (Server Core installation) 6.2.9200.26132
  • KB5094041
    Monthly Rollup
    • Windows Server 2012 R2 6.3.9600.23228
    • Windows Server 2012 R2 (Server Core installation) 6.3.9600.23228

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Remote Code Execution
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Unlikely

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-47288
  2. 2026-10-03 Alias added: GHSA-f3mm-ch2c-m27j

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