Patch tracker / CVE reference / CVE-2024-43451

CVE-2024-43451

CVE-2024-43451 is a medium severity Microsoft vulnerability with a CVSS score of 6.5. It is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it in the wild, which makes it a fix-first item. Microsoft has shipped the fix: deploy one of the 16 updates below from the Microsoft Update Catalog, and see where this CVE sits against the rest on the patch tracker.

Risk summary

MediumCISA KEV

6.5

CVSS

82%

EPSS, 30 days

Medium

Severity

Yes

Exploited in the wild

Listed in the CISA Known Exploited Vulnerabilities catalog, confirmed exploited in the wild. EPSS exploit probability 82%. CVSS 6.5 (Medium).

This CVE is among the top 5% of tracked Microsoft CVEs by EPSS exploit probability, and one of 2 actively-exploited CVEs in November 2024.

Senserva AI Opinion for CVE-2024-43451

CVE-2024-43451 leaks NTLM hashes through minimal user interaction such as single-clicking or right-clicking a malicious file, letting attackers relay or crack credentials for spoofing. It affects Windows Server 2025, its Server Core installation, and Windows 10 Version 1809, and CISA confirmed active exploitation adding it to KEV on 2024-11-12 with an 82 percent EPSS score. Any exposed endpoint or domain member using these builds is a live target for credential theft right now.

Do this: Deploy the November 2024 Microsoft security update for the affected Windows Server 2025 and Windows 10 1809 systems today.

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

Senserva AI Opinion and rich prompt for CVE-2024-43451

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-2024-43451 (source: https://senserva.com/cve/CVE-2024-43451.html, data from MSRC, CISA KEV, FIRST.org EPSS, NVD, refreshed twice a day (5 AM and 3 PM US Central)):
- CVE-2024-43451: Medium severity Microsoft vulnerability, CVSS 6.5
- EPSS 30-day exploitation probability: 82%
- Actively exploited (CISA KEV): YES
- Fixed by: KB5046612, KB5046613, KB5046615, KB5046616, KB5046617, KB5046618, KB5046630, KB5046633, KB5046639, KB5046661, KB5046665, KB5046682, KB5046687, KB5046696, KB5046698, KB5046705
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 now

Exploited in the wild: confirmed by the CISA KEV catalog, not predicted.

Fixed by KB5046612 and 15 more (by build, listed below). Download from the Microsoft Update Catalog, or deploy via Windows Update, Intune, or WSUS.

Do this now: Patch now and verify deployment on every exposed device.

Official patch(es) for CVE-2024-43451

Treat as urgent: it is being exploited in the wild (CISA KEV), so patch ahead of items that are not. In Intune or Defender, confirm whether the fixing updates KB5046612, KB5046613, KB5046615, KB5046616, KB5046617, KB5046618, KB5046630, KB5046633, KB5046639, KB5046661, KB5046665, KB5046682, KB5046687, KB5046696, KB5046698, KB5046705 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-2024-43451. 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.

KB5046612 KB5046613 KB5046615 KB5046616 KB5046617 KB5046618 KB5046630 KB5046633 KB5046639 KB5046661 KB5046665 KB5046682 KB5046687 KB5046696 KB5046698 KB5046705

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

CVE-2024-43451

Risk summary

Official patch(es) for CVE-2024-43451

Scope and sources