Microsoft · Security update · April 14, 2026
KB5082400: April 2026 security update
KB5082400, released April 14, 2026, fixes 3 CVEs across 2 products. None of them is reported as exploited. Patch Radar priority: Urgent.
Urgent
CVEs closed
3
1 rated Critical
Exploited
0
None reported
Exploitation more likely
0
Vendor assessment
Highest EPSS
0.0214
82nd percentile
Priority of the 3 CVEs
Patch now 0
Urgent 1
High 1
Routine 1
Applies to
| Product |
|---|
| Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 |
| Microsoft .NET Framework 4.6.2/4.7/4.7.1/4.7.2 on Windows Server 2012 (Server Core installation) |
CVEs this fix closes
| Priority | CVE | Component | Impact | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| Urgent | CVE-2026-23666 | .NET Framework | Denial of Service | 7.5 | 0.0133 | Exploitation Less Likely |
| High | CVE-2026-33116 | .NET, .NET Framework, Visual Studio | Denial of Service | 7.5 | 0.0214 | Exploitation Less Likely |
| Routine | CVE-2026-32226 | .NET Framework | Denial of Service | 5.9 | 0.0054 | Exploitation Less Likely |
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