CVE-2026-85844 · Infrastructure
NO FIX YET · SEE WHAT TO DO
Microsoft rates this Windows Kerberos elevation of privilege 9.8, Important, Exploitation More Likely, fixed in the October 2026 Patch Tuesday. Per a secondary write-up of Microsoft's guidance, an unauthenticated attacker sends crafted Kerberos authentication traffic, relays the result to a domain controller and gets SYSTEM with no user interaction. Not confirmed as exploited. Affected builds and KB numbers were not read from Microsoft's page.
first public Nov 10, 2026 · 2 sources
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Windows systems that use Kerberos for authentication, such as domain controllers and domain-joined servers and workstations. The sources do not say which Windows builds are affected or what configuration is required.
Not affected if no-domain-controllers
Who cares active-directory, domain-controller, kerberos, on-premises, windows
Authentication bypass using an alternate path or channel in Windows Kerberos allows an unauthorized attacker to elevate privileges over a network.
This page as .md · .json · CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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