Microsoft · Security update · May 12, 2026
KB5093448: May 2026 security update
KB5093448, released May 12, 2026, fixes 4 CVEs across 3 products. None of them is reported as exploited. Patch Radar priority: High.
High
CVEs closed
4
None rated Critical
Exploited
0
None reported
Exploitation more likely
0
Microsoft's assessment
Highest EPSS
0.0243
84th percentile
Priority of the 4 CVEs
Patch now 0
Urgent 0
High 3
Routine 1
Applies to
| Product |
|---|
| .NET 9.0 runtime installed on Linux |
| .NET 9.0 runtime installed on Mac OS |
| .NET 9.0 runtime installed on Windows |
CVEs this fix closes
| Priority | CVE | Component | Impact | CVSS | EPSS | Exploitation |
|---|---|---|---|---|---|---|
| High | CVE-2026-42899 | ASP.NET Core | Denial of Service | 7.5 | 0.0243 | Exploitation Unlikely |
| High | CVE-2026-35433 | .NET | Elevation of Privilege | 7.3 | 0.0077 | Exploitation Unlikely |
| High | CVE-2026-32177 | .NET | Elevation of Privilege | 7.3 | 0.0064 | Exploitation Less Likely |
| Routine | CVE-2026-32175 | .NET | Tampering | 4.3 | 0.0071 | Exploitation Less Likely |
Showing 1 to 4 of 4
1
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