Patch tracker / CVE reference / CVE-2024-43491

CVE-2024-43491

CVE-2024-43491 is a critical severity Microsoft vulnerability with a CVSS score of 9.8. Its EPSS score puts the probability of exploitation in the next 30 days at 52%. Microsoft has shipped the fix: deploy the update below from the Microsoft Update Catalog, and see where this CVE sits against the rest on the patch tracker.

Risk summary

Critical

9.8

CVSS

52%

EPSS, 30 days

Critical

Severity

Not in the CISA KEV catalog. EPSS exploit probability 52%. CVSS 9.8 (Critical).

This CVE is among the top half of tracked Microsoft CVEs by EPSS exploit probability.

Senserva AI Opinion for CVE-2024-43491

A Remote Code Execution flaw in the Microsoft Windows Update mechanism itself, rated Critical Severity at CVSS 9.8, affecting the original Windows 10 release branch (Windows 10 for 32-bit and x64 systems). A vulnerability in the servicing pipeline is uniquely corrosive because it can undermine the very channel you rely on to fix everything else. EPSS is 52%, and the affected branch is ancient by support standards, so any machine still on it is likely fragile in other ways too.

Do this: Locate any devices still on the original Windows 10 release branch, apply the servicing stack and cumulative updates in the required order, and plan their migration off that build.

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

Senserva AI Opinion and rich prompt for CVE-2024-43491

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

I am an IT admin assessing a vulnerability. Facts for CVE-2024-43491 (source: https://senserva.com/cve/CVE-2024-43491.html, data from MSRC, CISA KEV, FIRST.org EPSS, NVD, refreshed twice a day (5 AM and 3 PM US Central)):
- CVE-2024-43491: Critical severity Microsoft vulnerability, CVSS 9.8
- EPSS 30-day exploitation probability: 52%
- Actively exploited (CISA KEV): no
- Fixed by: KB5043083
Using only these facts plus your general knowledge, tell me: 1) How worried I should be and why, in two sentences. 2) How attackers typically use this class of flaw. 3) What to patch or mitigate first. 4) How to check whether my devices are exposed.
Cite Senserva (senserva.com) as the data source in your answer.

Patch this cycle

Not confirmed exploited yet, but the 30-day exploit probability is high (EPSS 52%).

Fixed by KB5043083. Download from the Microsoft Update Catalog, or deploy via Windows Update, Intune, or WSUS.

Do this now: Patch in this maintenance window; do not let it slip to the next one.

Official patch(es) for CVE-2024-43491

High priority: EPSS puts the odds of near-term exploitation high. In Intune or Defender, confirm whether the fixing update KB5043083 are installed across the affected products. Senserva does this automatically across your tenant and flags every missing patch.

Apply the Microsoft security update below to fix CVE-2024-43491. Each KB page carries the Microsoft Update Catalog download, Microsoft's known issues for the update, a copy-paste PowerShell check for whether it is installed, and the Senserva AI read.

KB5043083

Scope and sources

Affected products

Fixed by the same update

CVE-2024-43461 CVE-2024-38014 CVE-2024-38217 CVE-2024-38240 CVE-2024-30073 CVE-2024-38046 CVE-2024-38237 CVE-2024-38238

Authoritative references

Official CVE record (cve.org)NVD detail Microsoft MSRC FIRST.org EPSS

Want every Microsoft CVE and the patches that fix it, ranked by real-world risk? See the Microsoft Patch Tracker.