Patch tracker / CVE reference / CVE-2024-49117

CVE-2024-49117

CVE-2024-49117 is a high severity Microsoft vulnerability with a CVSS score of 8.8. Its EPSS score puts the probability of exploitation in the next 30 days at 83%. 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.

Risk summary

High

8.8

CVSS

83%

EPSS, 30 days

High

Severity

Not in the CISA KEV catalog. EPSS exploit probability 83%. CVSS 8.8 (High).

This CVE is among the top 5% 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.

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 twice a day (5 AM and 3 PM US Central)):
- CVE-2024-49117: High severity Microsoft vulnerability, CVSS 8.8
- EPSS 30-day exploitation probability: 83%
- 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.

Patch this cycle

Not confirmed exploited yet, but the 30-day exploit probability is high (EPSS 83%).

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

Official patch(es) for CVE-2024-49117

High priority: EPSS puts the odds of near-term exploitation high. 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

Scope and sources

Affected products

Fixed by the same updates

CVE-2024-49138 CVE-2024-49098 CVE-2024-49099 CVE-2024-49103 CVE-2024-49112 CVE-2024-49080 CVE-2024-49085 CVE-2024-49086

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.