Patch tracker / CVE reference / CVE-2024-49117

CVE-2024-49117

CVE-2024-49117 is a Microsoft vulnerability that Microsoft rates Critical, with a CVSS score of 8.8 (High). Microsoft has shipped the fix: deploy one of the 6 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Our data comes from Microsoft, CISA and other public sources, and it can be wrong or out of date.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 Critical. CVSS 8.8 (High). Fixed by 6 Microsoft security updates.

Senserva AI read on CVE-2024-49117 Official patches for CVE-2024-49117 Change history Admin questions

Risk summary

High

8.8

CVSS v3

1.0%

EPSS, 30 days

High

Severity

Not in the CISA KEV catalog. EPSS exploit probability 1.0%. CVSS 8.8 (High).

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

Senserva AI Opinion for CVE-2024-49117

CVE-2024-49117 is a Hyper-V remote code execution flaw where guest activity can execute code on the host, breaking the isolation boundary that virtualization depends on. It hits Windows Server 2022, its Server Core builds, and Windows 11 22H2 on ARM64, so any host running untrusted or multi-tenant VMs is directly exposed. It is rated Severity Critical at CVSS 9.8 with an 83 percent EPSS score, meaning exploitation is judged highly likely even though it is not yet in CISA KEV or tied to ransomware.

Do this: Apply Microsoft's December 2024 patch to all Hyper-V hosts running Windows Server 2022 and Windows 11 22H2 ARM64, starting with hosts running externally facing or untrusted guest VMs.

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

Schedule normally

No exploitation observed as of 2026-11-03: not in the CISA KEV catalog, EPSS 1%.

Fixed by KB5048653 and 5 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-2024-49117

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-2024-49117 (source: https://senserva.com/cve/CVE-2024-49117.html, data from MSRC, CISA KEV, FIRST.org EPSS, NVD, refreshed daily (early morning US Central)):
- CVE-2024-49117: Microsoft vulnerability, Microsoft rating Critical, CVSS 8.8 (High)
- EPSS 30-day exploitation probability: 1.0%
- Actively exploited (CISA KEV): no
- Fixed by: KB5048653, KB5048654, KB5048667, KB5048685, KB5048794, KB5048800
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.

Official patch(es) for CVE-2024-49117

Moderate priority: schedule it in your normal patch cycle. In Intune or Defender, confirm whether the fixing updates KB5048653, KB5048654, KB5048667, KB5048685, KB5048794, KB5048800 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-2024-49117. 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.

KB5048653 KB5048654 KB5048667 KB5048685 KB5048794 KB5048800

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

CVE-2024-49117

Risk summary

Official patch(es) for CVE-2024-49117

Scope and sources