Patch tracker / KB5086097
KB5086097: .NET 10.0 installed on Windows Security Update (April 2026)
KB5086097 is a High security update for .NET 10.0 installed on Windows, released 2026-04-14. It closes 4 CVEs with a maximum CVSS of 7.5. Get it from the Microsoft Update Catalog below, and see where it sits against the rest of the month on the patch tracker.
Update summary
New to these terms? How the Microsoft patching tools fit together, this month's Patch Tuesday summary, and every update ranked by real-world risk.
Senserva AI Opinion for KB5086097
KB5086097 patches 4 CVEs across Visual Studio 2022 versions 17.12 and 17.14 plus .NET 10.0 running on Windows, with the worst rated High severity at CVSS 7.5. Exposure is limited to developer workstations and build machines with these specific toolchains installed, not general endpoints. EPSS tops out at 2 percent and none of the four CVEs are in the CISA KEV catalog or linked to ransomware, so this is routine remediation rather than an emergency.
Do this: Inventory machines with Visual Studio 2022 17.12/17.14 or .NET 10.0 and schedule KB5086097 through your normal developer patch cycle.
AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5086097
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5086097
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.
Exploitation and severity
Fixes 4 CVEs. Most severe CVSS 7.5 (High). EPSS exploit probability up to 2.3%.
Among the lower half of tracked Microsoft updates by EPSS exploit probability.
What to do
Moderate priority: schedule it in your normal patch cycle. Senserva flags whether KB5086097 is missing on your devices.
Check if KB5086097 is installed
Copy-paste PowerShell: one machine, or your whole estate in one pass. No output means the update is not installed.
Get-HotFix covers Windows updates. Office, SharePoint, and Exchange server updates show under installed updates in Programs and Features, or check the Update Catalog history.
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-2026-26171 | High | 7.5 | 2.3% | No |
| CVE-2026-32178 | High | 7.5 | 2.3% | No |
| CVE-2026-32203 | High | 7.5 | 2.3% | No |
| CVE-2026-33116 | High | 7.5 | 2.3% | No |
Affected products
Also released in April 2026
The highest-risk updates from the same release:
The full month, summarized: Microsoft Patch Tuesday.
Authoritative references
See this and every Microsoft update ranked by real-world risk on the Microsoft Patch Tracker.