Microsoft · Security update · October 14, 2025
KB5066129: October 2025 security update
KB5066129, released October 14, 2025, fixes 1 CVE in Microsoft .NET Framework 3.5 AND 4.8.1 on Windows Server 2022, 23H2 Edition (Server Core installation). None of them is reported as exploited. Patch Radar priority: High. The product is no longer supported.
HighUnsupported product
CVEs closed
1
None rated Critical
Exploited
0
None reported
Exploitation more likely
0
Vendor assessment
Highest EPSS
0.0074
54th percentile
Applies to
CVEs this fix closes
| Priority | CVE | Component | Impact | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| High | CVE-2025-55248 | .NET, .NET Framework, Visual Studio | Information Disclosure | 8.2 | 0.0074 | Exploitation Less Likely |
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