CVE-2026-27912

Improper authorization in Windows Kerberos allows an authorized attacker to elevate privileges over an adjacent network.

CVSS v3 8.0 HIGH

8.0^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.1 / Impact : 5.9

Attack Vector ADJACENT_NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27912	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:o:microsoft:windows_server_2012:-:::::::*
	cpe:2.3:o:microsoft:windows_server_2012:r2:::::::*
	cpe:2.3:o:microsoft:windows_server_2016::::::::
	cpe:2.3:o:microsoft:windows_server_2019::::::::
	cpe:2.3:o:microsoft:windows_server_2022::::::::
	cpe:2.3:o:microsoft:windows_server_2022_23h2::::::::
	cpe:2.3:o:microsoft:windows_server_2025::::::::

History

23 Apr 2026, 14:56

Type	Values Removed	Values Added
CPE		cpe:2.3:o:microsoft:windows_server_2019:::::::: cpe:2.3:o:microsoft:windows_server_2025:::::::: cpe:2.3:o:microsoft:windows_server_2022:::::::: cpe:2.3:o:microsoft:windows_server_2022_23h2:::::::: cpe:2.3:o:microsoft:windows_server_2012:r2:::::::* cpe:2.3:o:microsoft:windows_server_2012:-:::::::* cpe:2.3:o:microsoft:windows_server_2016::::::::
References	~~() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27912 -~~	() https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27912 - Vendor Advisory
First Time		Microsoft windows Server 2022 Microsoft Microsoft windows Server 2019 Microsoft windows Server 2016 Microsoft windows Server 2022 23h2 Microsoft windows Server 2025 Microsoft windows Server 2012

14 Apr 2026, 18:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-04-14 18:16

Updated : 2026-06-17 10:27

NVD link : CVE-2026-27912

Mitre link : CVE-2026-27912

CVE.ORG link : CVE-2026-27912

JSON object : View

Products Affected

microsoft

windows_server_2016
windows_server_2022_23h2
windows_server_2012
windows_server_2022
windows_server_2019
windows_server_2025

CWE

CWE-285

Improper Authorization

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Server 2022, 23H2 Edition (Server Core installation)", "versions": [{"status": "affected", "version": "10.0.25398.0", "lessThan": "10.0.25398.2274", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Windows Server 2025", "versions": [{"status": "affected", "version": "10.0.26100.0", "lessThan": "10.0.26100.32690", "versionType": "custom"}], "platforms": ["x64-based Systems"]}, {"vendor": "Microsoft", "product": "Windows Server 2025 (Server Core installation)", "versions": [{"status": "affected", "version": "10.0.26100.0", "lessThan": "10.0.26100.32690", "versionType": "custom"}], "platforms": ["x64-based Systems"]}]}], "published": "2026-04-14T18:16:58.600", "references": [{"url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27912", "tags": ["Vendor Advisory"], "source": "secure@microsoft.com"}], "vulnStatus": "Analyzed", "weaknesses": [{"type": "Secondary", "source": "secure@microsoft.com", "description": [{"lang": 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