Patch tracker / KB5040490

KB5040490: Windows Server 2019 Security Update (August 2024)

KB5040490 is a High security update for Windows Server 2019, released 2024-08-13. It closes 1 CVE with a maximum CVSS of 7.8. It is the 22nd largest of the 49 updates Microsoft shipped that month, by CVEs closed.

Update summary

High
2024-08-13
Released
1
CVEs fixed
7.8
Max CVSS v3
High
Severity
Deploy this cycle
Fixes 1 CVE for Windows Server 2019. No confirmed in-the-wild exploitation in this set today.

Fixes 1 CVE. Most severe CVSS 7.8 (High). EPSS exploit probability up to <1%. Among the lower half of tracked Microsoft updates by EPSS exploit probability.

Senserva found thiswe track every release for this product line, so we can tell you this package is behind

A newer security update for Windows 10 Version 1809 for 32-bit Systems has shipped since this one: KB5122871 (2026-09-08). 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.

Microsoft Update Catalog: download KB5040490Microsoft support article
Senserva AI Opinion for KB5040490

KB5040490 fixes the same August 2024 CVE-2024-38191 in Windows 10 1809 and Windows Server 2019, High severity at 7.8. Its age and the number of sibling packages suggest this should already be resolved almost everywhere, making any gap notable.

Do this: Flag any host still missing KB5040490 as an overdue patch gap for investigation.

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

Senserva AI Opinion and rich prompt for KB5040490

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

Full tracking and change history for KB5040490

Released
2024-08-13
Last changed
2026-07-12
Changes tracked
3

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 KB5040490 is installed

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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-2024-38191High7.81.2%No

Scope and sources

Affected products
Also released in August 2024

KB5041160

47 CVEs · Critical · exploited

KB5041571

44 CVEs · Critical · exploited

KB5041573

48 CVEs · Critical · exploited

KB5041578

44 CVEs · Critical · exploited

KB5041580

43 CVEs · Critical · exploited

KB5041585

43 CVEs · Critical · exploited

KB5041592

43 CVEs · Critical · exploited

KB5041773

43 CVEs · Critical · exploited

The full month, summarized: Microsoft Patch Tuesday.

Authoritative references
Official KB5040490 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.
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