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Windows Server 2016 Windows Server 2016 Security update
Patch Tuesday

KB5034119

KB5034119: Cumulative update for Windows Server, version 2016, January 2024. Critical Kerberos bypass and IE mode scroll bar addressed

In short

The update addresses 26 vulnerabilities, including a critical Windows Kerberos security feature bypass, and a problem with the ActiveX scroll bar in IE mode. It is no longer available from Microsoft release channels as of March 31, 2026.

Does it affect you? Applies to: This update is for devices running Windows Server 2016.

Build
14393.6614
Security
26 fixed · 1 critical

Microsoft publishes separate notes for this KB for Windows 10.

What changes

Fix 1 change

ActiveX scroll bar

  • The update addresses a problem affecting the ActiveX scroll bar in IE mode.1

Technical details

Data sheet · Security · Downloads · Components Click to collapse or expand

Data sheet

Released
2024-01-09
Type
Cumulative update
VersionBuildChannel
2016 14393.6614 General availability

Security

26 vulnerabilities fixed
1 critical 25 important
VulnerabilitySeverityCVSS
Windows Kerberos Security Feature Bypass Vulnerability
Critical 8.8
Windows HTML Platforms Security Feature Bypass Vulnerability
Important 8.1
Microsoft ODBC Driver Remote Code Execution Vulnerability
Important 8.0
Microsoft Common Log File System Elevation of Privilege Vulnerability
Important 7.8
Microsoft Virtual Hard Disk Elevation of Privilege Vulnerability
Important 7.8
Windows Cryptographic Services Remote Code Execution Vulnerability
Important 7.8
Win32k Elevation of Privilege Vulnerability
Important 7.8
Microsoft Message Queuing (MSMQ) Denial of Service Vulnerability
Important 7.5
Microsoft AllJoyn API Denial of Service Vulnerability
Important 7.5
Remote Desktop Client Remote Code Execution Vulnerability
Important 7.5
Windows Group Policy Elevation of Privilege Vulnerability
Important 7.0
Microsoft Online Certificate Status Protocol (OCSP) Remote Code Execution Vulnerability
Important 6.6
BitLocker Security Feature Bypass Vulnerability
Important 6.6
Microsoft Message Queuing Information Disclosure Vulnerability
Important 6.5
Windows Message Queuing Client (MSMQC) Information Disclosure
Important 6.5
Microsoft Message Queuing Information Disclosure Vulnerability
Important 6.5
Windows Message Queuing Client (MSMQC) Information Disclosure
Important 6.5
Microsoft Message Queuing Information Disclosure Vulnerability
Important 6.5
Windows Themes Spoofing Vulnerability
Important 6.5
Windows Server Key Distribution Service Security Feature Bypass
Important 6.1
Microsoft Local Security Authority Subsystem Service Information Disclosure Vulnerability
Important 5.7
Windows CoreMessaging Information Disclosure Vulnerability
Important 5.5
Windows Cryptographic Services Information Disclosure Vulnerability
Important 5.5
Windows TCP/IP Information Disclosure Vulnerability
Important 5.3
Windows Online Certificate Status Protocol (OCSP) Information Disclosure Vulnerability
Important 4.9
Windows Themes Information Disclosure Vulnerability
Important 4.7

Sources

Updated
Cited passages from Microsoft's official notes (1)
  1. 1. This update addresses an issue that affects the ActiveX scroll bar. It does not work in IE mode. support.microsoft.com
Checked automatically: 8 of 8 checks passed, 1 quoted passage · compared with Microsoft's page on Nov 8, 2026
  • Quotes found in the official pages: passed
  • Numbers found in the sources: passed
  • Vulnerabilities from the dossier only: passed
  • Links to allowed domains only: passed
  • Every official change covered: passed
  • Readable plain text: passed
  • Changes confirmed by the file list: passed
  • Sources agree: passed

A second AI read the text against the sources: correctness 5/5, clarity 4/5, completeness 5/5. How we work

Published by The Update Bureau. Written with AI from Microsoft's own documents, checked by rules and a second AI. How we work · Report a mistake