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Windows Server 2019 Windows Server 2019 Security update
Patch Tuesday Zero-day

KB5068791

KB5068791: Cumulative update for Windows Server, version 2019, November 2025. Exploited Windows kernel flaw addressed; unexpected UAC prompts fixed

In short

The update addresses an actively exploited Windows kernel flaw and unexpected UAC prompts during some app repairs. It also includes security improvements and a servicing stack update.

Does it affect you? Applies to: All editions of Windows Server 2019.

Build
17763.8027
Security
32 fixed · 2 critical · 1 exploited
Restart
Required

Microsoft publishes separate notes for this KB for Windows 10.

What changes

Improvements 2 changes

Internal Windows OS

  • Windows includes miscellaneous security improvements to internal functionality; no specific issues are documented.1

Servicing stack

  • The component that installs Windows updates receives quality improvements.2
    The cumulative update includes servicing stack update KB5070248, build 17763.8020.

Fix 1 change

App compatibility (known issue)

  • Unexpected UAC prompts during MSI repair operations for some apps, including Autodesk AutoCAD, are addressed.3
    Addresses unexpected User Account Control (UAC) prompts when running MSI repair operations.

Technical details

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

Data sheet

Released
2025-11-11
Classification
Security Updates
Type
Cumulative update
Restart
Required
Replaces
KB5070883, KB5066586, KB5065428, KB5066187
+9 earlier KB5063877, KB5062557, KB5060531, KB5061978, KB5058392, KB5059091, KB5058922, KB5050008, KB5037425
Replaced by
KB5071544
VersionBuildChannel
2019 17763.8027 General availability

Security

32 vulnerabilities fixed
1 exploited 2 critical 30 important
VulnerabilitySeverityCVSS
CVE-2025-62215 Exploited
Windows Kernel Elevation of Privilege Vulnerability
Important 7.0
Windows GDI+ Remote Code Execution Vulnerability
Critical 9.8
DirectX Graphics Kernel Elevation of Privilege Vulnerability
Critical 7.0

The table lists the 3 exploited, publicly disclosed or critical vulnerabilities. See all 32 vulnerabilities →

Downloads (Microsoft Update Catalog)

Updated components

339 files changed since the previous update for the same versions.

Top changed componentsFiles
Graphics and display10
Security and sign-in5
Networking4
Secure Boot4
File Explorer and shell3
Kernel3
Hyper-V and virtualization2
Remote Desktop2
Audio1
Bluetooth1
Settings1
Storage and file systems1

Sources

Updated
Cited passages from Microsoft's official notes (3)
  1. 1. This update contains miscellaneous security improvements to internal Windows OS functionality. No specific issues are documented for this release. support.microsoft.com
  2. 2. This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. support.microsoft.com
  3. 3. Fixed: This update addresses an issue that created unexpected User Account Control (UAC) prompts for some apps, including Autodesk AutoCAD. support.microsoft.com
Checked automatically: 8 of 8 checks passed, 3 quoted passages · compared with Microsoft's page on Oct 20, 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 5/5, 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