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Windows 10 1809 Windows 10 1809 Security update
Patch Tuesday Zero-day

KB5044277

KB5044277: Cumulative update for Windows 10, version 1809, October 2024. Exploited MMC and MSHTML flaws addressed; Remote Desktop fixed

In short

Addresses 55 vulnerabilities, including two exploited flaws, and fixes Remote Desktop disruptions on some Windows Servers. It is no longer available as of March 31, 2026.

Does it affect you? Applies to: Devices running Windows 10 Enterprise LTSC 2019, version 1809, build 17763.6414.

Build
17763.6414
Security
55 fixed · 1 critical · 2 exploited

Microsoft publishes separate notes for this KB for Windows Server.

What changes

Fixes 2 changes

FrameShutdownDelay

  • The browser no longer ignores the FrameShutdownDelay setting.1
    The browser now honors the value in HKLM\SOFTWARE\Microsoft\Internet Explorer\Main.

Remote Desktop (known issue)

For: Windows Server users

  • Some Windows Servers no longer sporadically disrupt Remote Desktop sessions when a legacy Remote Desktop Gateway protocol is in use.2
    The issue could occur with legacy protocols such as Remote Procedure Call over HTTP. The TSGateway service could stop responding with exception code 0xc0000005.

Improvement 1 change

Servicing stack

  • The component that installs Windows updates gets quality improvements.3
    Includes servicing stack update KB5043126, build 17763.6289.

Known issues

  1. Resolved Affects: Organizations and IT administrators Resolved by KB5053596

    Following the installation of the October 2024 security update, some customers report that the OpenSSH (Open Secure Shell) service fails to start, preventing SSH connections.

    On a limited number of enterprise, IoT, and education devices, OpenSSH might fail to start, preventing SSH connections. Microsoft was investigating whether Home or Pro devices are affected. KB5053596 addresses this issue.4

    Resolution Fixed in KB5053596

    Install KB5053596 (or a later cumulative update) on affected devices. No manual workaround is required after updating.

Technical details

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

Data sheet

Released
2024-10-08
Type
Cumulative update
VersionBuildChannel
1809 17763.6414 General availability

Security

55 vulnerabilities fixed
2 exploited 1 critical 53 important 1 moderate
VulnerabilitySeverityCVSS
CVE-2024-43572 Exploited
Microsoft Management Console Remote Code Execution Vulnerability
 Important 7.8
CVE-2024-43573 Exploited
Windows MSHTML Platform Spoofing Vulnerability
 Moderate 6.5
CVE-2024-43582
Remote Desktop Protocol Server Remote Code Execution Vulnerability
 Critical 8.1
CVE-2024-6197
Hackerone: CVE-2024-6197 Freeing stack buffer in utf8asn1str
 Important 8.8
CVE-2024-38202
Windows Update Stack Elevation of Privilege Vulnerability
 Important 7.3
CVE-2024-20659
Windows Hyper-V Security Feature Bypass Vulnerability
 Important 7.1

The table lists the 6 exploited, publicly disclosed or critical vulnerabilities. See all 55 vulnerabilities →

Sources

Updated
Cited passages from Microsoft's official notes (4)
  1. 1. [FrameShutdownDelay] Fixed: The browser ignores its value in the “HKLM\SOFTWARE\Microsoft\Internet Explorer\Main” registry key. support.microsoft.com
  2. 2. [Remote Desktop (known issue)] Fixed: Windows Servers might disrupt Remote Desktop connections across your company. This issue might occur if you use a legacy protocol in the Remote Desktop Gateway. support.microsoft.com
  3. 3. This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. support.microsoft.com
  4. 4. This issue is addressed in KB5053596. support.microsoft.com
Checked automatically: 7 of 8 checks passed, 4 quoted passages · compared with Microsoft's page on Nov 14, 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: not passed

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