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CVE-2026-27912

Windows Kerberos Elevation of Privilege Vulnerability

Published: Apr 14, 2026Updated: Apr 23, 2026 Sources: CVE List NVD BDUCWE-285
8.0HIGH
NVD MITRE
EPSS Score
0.2%
Top 84.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
OpenVAS

Description

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

No summary for this CVE yet.

CVSS Vector Breakdown

AV:AAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:AAttack Vector
Adjacent
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-285

Affected Products

Microsoft Corp
commercial·USaka Microsoft, microsoft corporation
Windows Server 2025 (Server Core installation)On-premOS
Operating Systems / windows
Windows Server 2022 (Server Core installation)On-premOS
Operating Systems / windows
Windows Server 2019 (Server Core installation)On-premOS
Operating Systems / windows
Windows Server 2016 (Server Core installation)On-premOS
Operating Systems / windows
Windows Server 2012 R2 (Server Core installation)On-premOS
Operating Systems / windows
Windows Server 2012 (Server Core installation)On-premOS
Operating Systems / windows
and 25 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2026-27912?We can run the check for you — a free external exposure review, no install. Check my exposure

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27912
msrc.microsoft.com
News mentions
1

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