Patch tracker / CVE reference / CVE-2024-43455

CVE-2024-43455

CVE-2024-43455 is a Microsoft vulnerability that Microsoft rates Important, with a CVSS score of 8.8 (High). Microsoft has shipped the fix: deploy one of the 11 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Our data comes from Microsoft, CISA and other public sources, and it can be wrong or out of date.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.

Microsoft rates it Important. CVSS 8.8 (High). Fixed by 11 Microsoft security updates.

Senserva AI read on CVE-2024-43455Official patches for CVE-2024-43455Change historyAdmin questions

Risk summary

High
8.8
CVSS v3
1.7%
EPSS, 30 days
High
Severity

Not in the CISA KEV catalog. EPSS exploit probability 1.7%. CVSS 8.8 (High).

This CVE is among the top 10% of tracked Microsoft CVEs by EPSS exploit probability.

Senserva AI Opinion for CVE-2024-43455

A spoofing flaw in the Windows Remote Desktop Licensing Service earns a Critical CVSS 9.8 rating here, affecting Windows Server 2019 and 2022 with EPSS at 71 percent. That score for a spoofing bug signals impact well beyond nuisance: successful attacks against licensing infrastructure can undermine trust in the RDS deployment around it. Terminal server farms are the exposed population.

Do this: Include licensing servers in your RDS patch group and verify they are not exposed beyond the RDS infrastructure.

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

Schedule normally
No exploitation observed as of 2026-11-10: not in the CISA KEV catalog, EPSS 2%.
Fixed by KB5042880 and 10 more (by build, listed below). Download from the Microsoft Update Catalog, or deploy via Windows Update, Intune, or WSUS.
Do this now: Deploy with your normal update cycle. This page refreshes daily; the verdict changes the day the data does.
Senserva AI Opinion and rich prompt for CVE-2024-43455

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

Official patch(es) for CVE-2024-43455

Moderate priority: schedule it in your normal patch cycle. In Intune or Defender, confirm whether the fixing updates KB5042880, KB5042881, KB5043050, KB5043051, KB5043055, KB5043087, KB5043092, KB5043125, KB5043129, KB5043135, KB5043138 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-2024-43455. 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.

KB5042880KB5042881KB5043050KB5043051KB5043055KB5043087KB5043092KB5043125KB5043129KB5043135KB5043138

Scope and sources

Affected products
Fixed by the same updates
CVE-2024-38014CVE-2024-38217CVE-2024-43461CVE-2024-38234CVE-2024-38235CVE-2024-38254CVE-2024-38256CVE-2024-43487
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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