The Update BureauKB5039879: Cumulative update for .NET Framework, versions 3.5 and 4.7.2, on Windows 10 1809 and Windows Server 2019, July 2024. Temp-path behavior changes to close a privilege flaw
In short
The update addresses CVE-2024-38081, an elevation-of-privilege vulnerability. It also changes how .NET resolves temporary paths, which may require affected applications to adapt.
Does it affect you? Applies to: Devices running Windows 10, version 1809, or Windows Server 2019 with .NET Framework 3.5 or 4.7.2 installed.
What changes
Technical details
Data sheet · Security · Downloads · Components Click to collapse or expand
Data sheet
- Released
- 2024-07-09
- Classification
- Security Updates
- Type
- Cumulative update
- Restart
- Required
- Replaces
- KB5037932, KB5036604
- Replaced by
- KB5044016
| Version | File version | Channel |
|---|---|---|
| 3.5 | 2.0.50727.9064 | General availability |
| 4.7.2 | 4.7.4101.0 | General availability |
Security
| Vulnerability | Severity | CVSS |
|---|---|---|
|
.NET, .NET Framework, and Visual Studio Elevation of Privilege Vulnerability
|
Not rated | — |
Downloads (Microsoft Update Catalog)
x64
Windows 10 Enterprise LTSC 2019 / Windows Server 2019
83.7 MB
Arm64
Windows 10 Enterprise LTSC 2019
46.6 MB
x86
Windows 10 Enterprise LTSC 2019
46.6 MB
Updated components
85 files changed since the previous update for the same versions.
| Top changed components | Files |
|---|---|
| WPF | 24 |
| .NET runtime (CLR) | 21 |
| ASP.NET | 9 |
Sources
Updated
Cited passages from Microsoft's official notes (2)
-
1.
This security update addresses a remote code execution vulnerability detailed in CVE-2024-38081.
support.microsoft.com -
2.
Addresses an issue with the size of memory leaks associated with AccessibleObjects held in memory due to ref-counting.
support.microsoft.com
Checked automatically: 7 of 8 checks passed, 2 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: 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