Patch tracker / KB5093446
KB5093446: .NET 8.0 installed on Windows Security Update (May 2026)
KB5093446 is a High security update for .NET 8.0 installed on Windows, released 2026-05-12. It closes 4 CVEs with a maximum CVSS of 7.5. It is the 15th largest of the 61 updates Microsoft shipped that month, by CVEs closed.
Update summary
Fixes 4 CVEs. Most severe CVSS 7.5 (High). EPSS exploit probability up to 2.4%. Among the top half of tracked Microsoft updates by EPSS exploit probability.
A newer security update for .NET 10.0 installed on Windows has shipped since this one: KB5100984 (2026-07-14). For cumulative update families the newer package includes these fixes, so installing that one is usually the shorter path. Verify against your own update rings before you skip this package.
KB5093446 patches four CVEs across .NET 8.0, 9.0, and 10.0 on Windows, with the worst rated High severity at CVSS 7.5. None are on the CISA KEV list, none are ransomware-linked, and exploitation likelihood is low with EPSS at 2 percent. This touches any Windows server or workstation running apps built on these three .NET runtimes, so the exposure follows your application footprint rather than a single service.
Do this: Inventory which of .NET 8.0, 9.0, and 10.0 you have deployed on Windows, then push KB5093446 to those hosts through your normal update channel and restart affected apps.
AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5093446
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5093446
- Released
- 2026-05-12
- Last changed
- 2026-05-12
- Changes tracked
- 1
Senserva began recording day-to-day change history on 2026-07-07, and refreshes it several times a day. Release dates are historical where Microsoft publishes them; revision history is tracked from that date forward, so it does not include changes made before then.
Check if KB5093446 is installed
Elevated PowerShell. No output means it is not installed.
CVEs fixed by this update
Sorted exploited-first, then by CVSS. Every CVE links to its Senserva page with the full risk facts, references, and a ready-to-paste AI prompt.
| CVE | Severity | CVSS | EPSS | Exploited |
|---|---|---|---|---|
| CVE-2026-32175 | High | 7.5 | 2.4% | No |
| CVE-2026-42899 | High | 7.5 | 2.4% | No |
| CVE-2026-32177 | High | 7.3 | 2.4% | No |
| CVE-2026-35433 | High | 7.3 | 2.4% | No |
Scope and sources
- Affected products
- Also released in May 2026
KB5002863
9 CVEs · High · exploitedKB5002868
9 CVEs · High · exploitedKB5002870
9 CVEs · High · exploitedKB5094139
1 CVE · High · exploitedKB5094140
1 CVE · High · exploitedKB5094142
1 CVE · High · exploitedKB5094144
1 CVE · High · exploitedKB5078943
3 CVEs · CriticalThe full month, summarized: Microsoft Patch Tuesday.
- Authoritative references
See this and every Microsoft update ranked by real-world risk on the Microsoft Patch Tracker.