Patch tracker / KB5058383
KB5058383: Windows Server 2019 Security Update (August 2025)
KB5058383 is a High security update for Windows Server 2019, released 2025-08-12. It closes 39 CVEs with a maximum CVSS of 8.8. At least one of them is actively exploited (CISA KEV), so this is a deploy-first update. 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 KB5058383
KB5058383 is the August 12, 2025 rollup for Windows 10 version 1809 and Windows Server 2019, fixing 39 CVEs topping out at High severity (CVSS 8.8). One of these CVEs is on the CISA KEV list of confirmed exploited flaws, though none are tied to known ransomware, and the highest EPSS score of 21% signals meaningful near-term exploitation likelihood. Server 2019 domain controllers and any remaining 1809 endpoints are directly exposed.
Do this: Deploy KB5058383 to all Windows Server 2019 and Windows 10 1809 systems now, prioritizing internet-facing servers and the KEV-listed CVE.
AI-generated from public data, 2026-07-21. Verify against the vendor advisory before acting.
Senserva AI Opinion and rich prompt for KB5058383
Copy this prompt into Claude, ChatGPT, or Copilot. The facts are included, sourced from this page.
Full tracking and change history for KB5058383
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 39 CVEs. At least one is actively exploited (CISA KEV). Most severe CVSS 8.8 (High). EPSS exploit probability up to 24%.
Among the top half of tracked Microsoft updates by EPSS exploit probability.
What to do
Treat as urgent: it is being exploited in the wild (CISA KEV), so patch ahead of items that are not. Senserva flags whether KB5058383 is missing on your devices.
Check if KB5058383 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.
Affected products
Also released in August 2025
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.