CVE-2026-27912 Details
Description
Improper authorization in Windows Kerberos allows an authorized attacker to elevate privileges over an adjacent network.
A vulnerability exists in Windows Kerberos due to improper authorization, which allows an authorized attacker to elevate privileges over an adjacent network. This issue affects multiple versions of Windows Server, including 2012 R2, 2016, 2019, 2022, and 2025, as well as Windows Server 2022 23H2 Edition.
Users can download the security update for this vulnerability via the Microsoft Update Catalog. Specific update details can be found in the Microsoft Knowledge Base articles KB5082126, KB5082127, KB5082198, KB5082063, KB5082142, and KB5082123.
Metrics
CVSS 4.0 Severity and Vector Strings:
No CVSS 4.0 data is available for this CVE.
CVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
CISA-ADP
Assessed Apr 13, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27912 | [email protected] | Vendor Advisory |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-285 | Improper Authorization | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| microsoft windows server 2012 | r2 |
CPE
Remediation
| |
| microsoft windows server 2016 | < 10.0.14393.9060 |
CPE
Remediation
| |
| microsoft windows server 2019 | < 10.0.17763.8644 |
CPE
Remediation
| |
| microsoft windows server 2022 | < 10.0.20348.5020 |
CPE
Remediation
| |
| microsoft windows server 2022 23h2 | < 10.0.25398.2274 |
CPE
Remediation
| |
| microsoft windows server 2025 | < 10.0.26100.32690 |
CPE
Remediation
| |
Change History
4 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Jun 17, 2026 | CVE Modified | [email protected] |
| Jun 17, 2026 | CVE Modified | CISA-ADP |
| Apr 23, 2026 | Initial Analysis | [email protected] |
| Apr 14, 2026 | New CVE Received | [email protected] |