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.NET Framework 3.5 / 4.8 .NET Framework 3.5 / 4.8 Security update
Patch Tuesday

KB5087068

KB5087068: Cumulative update for .NET Framework, versions 3.5 and 4.8, on Windows Server 2022, May 2026. Two flaws could let users gain higher privileges

In short

The update addresses two .NET Framework security flaws that could let users gain higher privileges on Windows Server 2022.

Does it affect you? Applies to: Windows Server 2022 devices with .NET Framework 3.5 or 4.8 installed.

File version
2.0.50727.9181 · 4.8.4802.0
Security
2 fixed
Restart
Required

What changes

Fixes 2 changes

.NET Framework

2 items

For: Windows Server administrators

  • A security flaw could let a user gain higher privileges.1
    Addresses CVE-2026-32177, an elevation-of-privilege vulnerability.
  • A security flaw could let a user gain higher privileges.2
    Addresses CVE-2026-35433, an elevation-of-privilege vulnerability.

Technical details

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

Data sheet

Released
2026-05-12
Classification
Security Updates
Type
Cumulative update
Restart
Required
Replaces
KB5082427, KB5066139
Replaced by
KB5101010
VersionFile versionChannel
3.5 2.0.50727.9181 General availability
4.8 4.8.4802.0 General availability

Security

2 vulnerabilities fixed
2 important
VulnerabilitySeverityCVSS
CVE-2026-32177
.NET Elevation of Privilege Vulnerability
 Important 7.3
CVE-2026-35433
.NET Elevation of Privilege Vulnerability
 Important 7.3

Downloads (Microsoft Update Catalog)

x64 Windows Server 2022
74.6 MB
windows10.0-kb5087068-x64-ndp48.msu Main update · KB5087068 SHA-1: e788771a…3be12a

Updated components

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

Top changed componentsFiles
WPF28

Sources

Updated
Cited passages from Microsoft's official notes (2)
  1. 1. This security update addresses a Elevation of Privilege vulnerability detailed in CVE-2026-32177. support.microsoft.com
  2. 2. This security update addresses a Elevation of Privilege vulnerability detailed in CVE-2026-35433. support.microsoft.com
Checked automatically: 8 of 8 checks passed, 2 quoted passages · compared with Microsoft's page on Sep 25, 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