CVE-2026-69553 Windows Hyper-V - Broken Access Control

Windows Hyper-V contains a broken access control vulnerability caused by missing authorization checks, letting authorized attackers elevate privileges over a network, exploit requires attacker to be authorized.

CVSS base score 7.1 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Required
EPSS
0.49% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Broken Access Control
Impact
Privilege Escalation
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Published
8 September 2026
Updated
15 October 2026
Weakness
CWE-862

Vendor fix

Update to the latest version of Windows Hyper-V with security patches.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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