Patch tracker / KB5043049

KB5043049: Windows 10 Version 1809 for 32-bit Sys Security Update (September 2024)

KB5043049 is a High security update for Windows 10 Version 1809 for 32-bit Sys, released 2024-09-10. It closes 2 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. The most likely of them to be attacked is CVE-2024-43461, which FIRST.org rates at 52% probability of exploitation in the next 30 days.

Update summary

HighCISA KEV
2024-09-10
Released
2
CVEs fixed
8.8
Max CVSS
High
Severity
Deploy now
This update fixes vulnerabilities confirmed exploited in the wild.

Fixes 2 CVEs. At least one is actively exploited (CISA KEV). Most severe CVSS 8.8 (High). EPSS exploit probability up to 52%. Among the top 25% of tracked Microsoft updates by EPSS exploit probability.

Microsoft Update Catalog: download KB5043049Microsoft support article
Senserva AI Opinion for KB5043049

KB5043049 is a narrow September 2024 update for Windows 11 version 24H2 and Windows 10 1809, fixing just two CVEs, CVE-2024-43461 and CVE-2024-30073. Despite the short list, the top flaw is High severity at CVSS 8.8 with a 52 percent EPSS score and a CISA KEV listing, so this two CVE package still closes an actively exploited hole. A small update footprint should not be mistaken for low priority here.

Do this: Apply KB5043049 promptly to fix the actively exploited CVE-2024-43461 and CVE-2024-30073 on Windows 11 24H2 and Windows 10 1809.

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

Senserva AI Opinion and rich prompt for KB5043049

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

Full tracking and change history for KB5043049

Released
2024-09-10
Last changed
2024-09-10
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 KB5043049 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-2024-43461High8.852%KEV
CVE-2024-30073High7.852%No

Scope and sources

Affected products
Also released in September 2024

KB5043083

24 CVEs · Critical · exploited

KB5042880

37 CVEs · High · exploited

KB5042881

37 CVEs · High · exploited

KB5043050

36 CVEs · High · exploited

KB5043051

37 CVEs · High · exploited

KB5043055

37 CVEs · High · exploited

KB5043064

29 CVEs · High · exploited

KB5043067

29 CVEs · High · exploited

The full month, summarized: Microsoft Patch Tuesday.

Authoritative references
Official KB5043049 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.