Patch tracker / CVE reference / CVE-2024-43484

CVE-2024-43484

CVE-2024-43484 is a Microsoft vulnerability that Microsoft rates Important, with a CVSS score of 7.5 (High). Its EPSS score puts the probability of exploitation in the next 30 days at 67%. Microsoft has shipped the fix: deploy one of the 19 updates below from the Microsoft Update Catalog, and see where this CVE sits against the rest on the patch tracker.

Our data comes from Microsoft, CISA and other public sources, and it can be wrong or out of date. If you are unsure, check the linked source before you act, and tell us when we are wrong so we can fix it.

Risk summary

High
7.5
CVSS v3
67%
EPSS, 30 days
High
Severity

Not in the CISA KEV catalog. EPSS exploit probability 67%. CVSS 7.5 (High).

This CVE is among the top 25% of tracked Microsoft CVEs by EPSS exploit probability.

Senserva AI Opinion for CVE-2024-43484

This is a Denial of Service flaw in the .NET stack rated Critical at CVSS 9.0, which is unusually high for a DoS-only issue. Exposure is narrow but specific: PowerShell 7.2 and 7.4, plus Visual Studio 2022 version 17.6, so your automation servers and developer workstations are the concern rather than end users. The 67 percent EPSS score signals a meaningful near-term exploitation likelihood even though it is not yet in CISA KEV or tied to ransomware.

Do this: Inventory hosts running PowerShell 7.2 or 7.4 and Visual Studio 2022 17.6, then apply Microsoft's .NET and Visual Studio updates for CVE-2024-43484.

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

Senserva AI Opinion and rich prompt for CVE-2024-43484

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

Patch this cycle
Not confirmed exploited yet, but the 30-day exploit probability is high (EPSS 67%).
Fixed by KB5044021 and 18 more (by build, listed below). 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-2024-43484

High priority: EPSS puts the odds of near-term exploitation high. In Intune or Defender, confirm whether the fixing updates KB5044021, KB5044028, KB5044030, KB5044033, KB5044085, KB5044086, KB5044089, KB5044090, KB5044091, KB5044092, KB5044095, KB5044096, KB5044097, KB5044098, KB5044099, KB5044286, KB5044293, KB5045993, KB5045998 are installed across the affected products. Senserva does this automatically across your tenant and flags every missing patch.

Apply the Microsoft security updates below to fix CVE-2024-43484. 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.

KB5044021KB5044028KB5044030KB5044033KB5044085KB5044086KB5044089KB5044090KB5044091KB5044092KB5044095KB5044096KB5044097KB5044098KB5044099KB5044286KB5044293KB5045993KB5045998

Scope and sources

Affected products
Fixed by the same updates
CVE-2024-43572CVE-2024-43573CVE-2024-37976CVE-2024-37979CVE-2024-37982CVE-2024-37983CVE-2024-38124CVE-2024-43456
Authoritative references
Official CVE record (cve.org)NVD detailMicrosoft MSRCFIRST.org EPSS

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