Microsoft

CVE-2026-85844: Windows Kerberos Elevation of Privilege Vulnerability

Is it exploited?

Not on CISA's list. CISA has not added it to the Known Exploited Vulnerabilities catalog as of 10 Nov 2026. If CISA adds it, this page shows it as known exploited.

How likely is exploitation in the next 30 days?

EPSS score, percentile 64.5 of all scored records. A probability estimated by FIRST, not a report of exploitation.

How severe?

9.8 Critical

CVSS v3.1 base score, given by the CNA

What should I do?

CISA has set no required action, because the vulnerability is not in KEV.

Advisories and patches (1)

Which versions are affected?

Affected

from 10.0.14393.0 to before 10.0.14393.9688
from 10.0.17763.0 to before 10.0.17763.9487
from 10.0.19044.0 to before 10.0.19044.7846
from 10.0.19045.0 to before 10.0.19045.7846
from 10.0.22631.0 to before 10.0.22631.7711
from 10.0.22631.0 to before 10.0.22631.7711

and 14 more in the table below

Versions by product

Source: CISA KEV 2026.11.10, as of 10 Nov 2026; FIRST EPSS, as of 12 Nov 2026; CVE List, as of 12 Nov 2026. About the data.

Description

Windows Kerberos Elevation of Privilege Vulnerability

Authentication bypass using an alternate path or channel in Windows Kerberos allows an unauthorized attacker to elevate privileges over a network.

Source: CVE List, as of 12 Nov 2026. About the data.

What to do

Advisories and patches

Windows Kerberos Elevation of Privilege Vulnerability (Vendor advisory, Patch)

This summary is based on the CVE record as of 12 Nov 2026. Check the vendor's advisory before you act: affected versions and fixes can change.

Affected products and versions

Versions by product, as listed in the CVE record (20 products)

Microsoft Windows 10 Version 1607
Status	Versions
Affected	from 10.0.14393.0 to before 10.0.14393.9688

Microsoft Windows 10 Version 1809
Status	Versions
Affected	from 10.0.17763.0 to before 10.0.17763.9487

Microsoft Windows 10 Version 21H2
Status	Versions
Affected	from 10.0.19044.0 to before 10.0.19044.7846

Microsoft Windows 10 Version 22H2
Status	Versions
Affected	from 10.0.19045.0 to before 10.0.19045.7846

Microsoft Windows 11 version 23H2
Status	Versions
Affected	from 10.0.22631.0 to before 10.0.22631.7711

Microsoft Windows 11 Version 23H2
Status	Versions
Affected	from 10.0.22631.0 to before 10.0.22631.7711

Microsoft Windows 11 Version 24H2
Status	Versions
Affected	from 10.0.26100.0 to before 10.0.26100.9974

Microsoft Windows 11 Version 25H2
Status	Versions
Affected	from 10.0.26200.0 to before 10.0.26200.9974

Microsoft Windows 11 version 26H1
Status	Versions
Affected	from 10.0.28000.0 to before 10.0.28000.3501

Microsoft Windows 11 Version 26H2
Status	Versions
Affected	from 10.0.26300.0 to before 10.0.26300.9974

Microsoft Windows Server 2012
Status	Versions
Affected	from 6.2.9200.0 to before 6.2.9200.26434

Microsoft Windows Server 2012 (Server Core installation)
Status	Versions
Affected	from 6.2.9200.0 to before 6.2.9200.26434

Microsoft Windows Server 2012 R2
Status	Versions
Affected	from 6.3.9600.0 to before 6.3.9600.23470

Microsoft Windows Server 2012 R2 (Server Core installation)
Status	Versions
Affected	from 6.3.9600.0 to before 6.3.9600.23470

Microsoft Windows Server 2016
Status	Versions
Affected	from 10.0.14393.0 to before 10.0.14393.9688

Microsoft Windows Server 2016 (Server Core installation)
Status	Versions
Affected	from 10.0.14393.0 to before 10.0.14393.9688

Microsoft Windows Server 2019
Status	Versions
Affected	from 10.0.17763.0 to before 10.0.17763.9487

Microsoft Windows Server 2019 (Server Core installation)
Status	Versions
Affected	from 10.0.17763.0 to before 10.0.17763.9487

Microsoft Windows Server 2022
Status	Versions
Affected	from 10.0.20348.0 to before 10.0.20348.5870

Microsoft Windows Server 2025
Status	Versions
Affected	from 10.0.26100.0 to before 10.0.26100.33822

Source: CVE List, as of 12 Nov 2026. About the data.

Weakness

CWE-288

CWE-288: Authentication Bypass Using an Alternate Path or Channel

CWE and CAPEC are maintained by MITRE; the entries are those named in the CVE record.

Timeline

Date	Event
10 Nov 2026	CVE record published
11 Nov 2026	CVE record last updated

Known exploited Microsoft vulnerabilities

CVE-2026-124194: Microsoft Office Outlook Missing User Interaction for Potentially Unsafe Action Vulnerability (added 10 Nov 2026)
CVE-2026-96951: Microsoft Windows Command Injection Vulnerability (added 13 Oct 2026)
CVE-2026-65660: Microsoft SharePoint Code Injection Vulnerability (added 25 Sep 2026)
CVE-2026-81963: Microsoft Windows Link Following Vulnerability (added 8 Sep 2026)
CVE-2026-85880: Microsoft Windows Heap-Based Buffer Overflow Vulnerability (added 8 Sep 2026)