Patch tracker / KB5082417

KB5082417: Microsoft .NET Framework 4.8 on Window Security Update (April 2026)

KB5082417 is a High security update for Microsoft .NET Framework 4.8 on Window, released 2026-04-14. It closes 3 CVEs with a maximum CVSS of 7.5. It is the 17th largest of the 60 updates Microsoft shipped that month, by CVEs closed.

Update summary

High
2026-04-14
Released
3
CVEs fixed
7.5
Max CVSS v3
High
Severity
Deploy this cycle
Fixes 3 CVEs for Microsoft .NET Framework 4.8 on Window. No confirmed in-the-wild exploitation in this set today.

Fixes 3 CVEs. Most severe CVSS 7.5 (High). EPSS exploit probability up to 2.1%. Among the lower half of tracked Microsoft updates by EPSS exploit probability.

Microsoft Update Catalog: download KB5082417Microsoft support article
Senserva AI Opinion for KB5082417

KB5082417 patches three CVEs in .NET 8.0 and .NET 10.0 across Linux and Mac OS runtimes, with a highest Severity of High at CVSS 7.5. The cross-platform scope matters because the exposure sits on your non-Windows .NET hosts, which are often patched on a slower cadence than Windows servers. Exploitation risk is currently low with a 2 percent EPSS and no CISA KEV listing, so this is a plan-and-schedule item rather than an emergency.

Do this: Inventory Linux and Mac OS machines running .NET 8.0 or .NET 10.0 and update their runtimes and SDKs to the KB5082417 fixed versions.

AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.

Senserva AI Opinion and rich prompt for KB5082417

Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.

Full tracking and change history for KB5082417

Released
2026-04-14
Last changed
2026-04-14
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 KB5082417 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.

CVESeverityCVSSEPSSExploited
CVE-2026-23666High7.52.1%No
CVE-2026-33116High7.52.3%No
CVE-2026-32226Medium5.92.1%No

Scope and sources

Affected products
Also released in April 2026

KB5082052

115 CVEs · Critical · exploited

KB5082060

121 CVEs · Critical · exploited

KB5082063

124 CVEs · Critical · exploited

KB5082123

107 CVEs · Critical · exploited

KB5082142

116 CVEs · Critical · exploited

KB5082198

87 CVEs · Critical · exploited

KB5082200

107 CVEs · Critical · exploited

KB5083768

119 CVEs · Critical · exploited

The full month, summarized: Microsoft Patch Tuesday.

Authoritative references
Official KB5082417 page (Microsoft Support)Microsoft Update CatalogMicrosoft Security Update Guide

See this and every Microsoft update ranked by real-world risk on the Microsoft Patch Tracker.

New to a term on this page? CVE, KB, KEV, CVSS, and EPSS are each explained once, on the Senserva security lexicon. Reference: Microsoft CVE and vulnerability management and the Microsoft patching guide.
Provided as is, without warranty; verify against the vendor advisory before acting. Data notice and terms.