Patch tracker / CVE reference / CVE-2024-49090

CVE-2024-49090

CVE-2024-49090 is a high severity Microsoft vulnerability with a CVSS score of 7.8. Its EPSS score puts the probability of exploitation in the next 30 days at 83%. Microsoft has shipped the fix: deploy one of the 16 updates below from the Microsoft Update Catalog, and see where this CVE sits against the rest on the patch tracker.

Risk summary

High

7.8

CVSS

83%

EPSS, 30 days

High

Severity

Not in the CISA KEV catalog. EPSS exploit probability 83%. CVSS 7.8 (High).

This CVE is among the top 5% of tracked Microsoft CVEs by EPSS exploit probability.

Senserva AI Opinion for CVE-2024-49090

This CLFS driver elevation of privilege flaw is notable for spanning both ends of the Windows lifecycle: brand-new Windows Server 2025 and the 2018-era Windows 10 Version 1809. CLFS is a perennial favorite of ransomware operators for local privilege escalation, and this bug's CVSS 9.8 rating and 84 percent EPSS score fit that profile. No confirmed exploitation yet, but the component's track record argues for urgency.

Do this: Patch Windows Server 2025 and 1809-branch systems together, treating internet-facing and multi-user hosts as first in line.

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

Senserva AI Opinion and rich prompt for CVE-2024-49090

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-2024-49090 (source: https://senserva.com/cve/CVE-2024-49090.html, data from MSRC, CISA KEV, FIRST.org EPSS, NVD, refreshed twice a day (5 AM and 3 PM US Central)):
- CVE-2024-49090: High severity Microsoft vulnerability, CVSS 7.8
- EPSS 30-day exploitation probability: 83%
- Actively exploited (CISA KEV): no
- Fixed by: KB5048652, KB5048653, KB5048654, KB5048661, KB5048667, KB5048671, KB5048676, KB5048685, KB5048695, KB5048699, KB5048703, KB5048710, KB5048735, KB5048744, 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 KB5048652 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 in this maintenance window; do not let it slip to the next one.

Official patch(es) for CVE-2024-49090

High priority: EPSS puts the odds of near-term exploitation high. In Intune or Defender, confirm whether the fixing updates KB5048652, KB5048653, KB5048654, KB5048661, KB5048667, KB5048671, KB5048676, KB5048685, KB5048695, KB5048699, KB5048703, KB5048710, KB5048735, KB5048744, 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-2024-49090. 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.

KB5048652 KB5048653 KB5048654 KB5048661 KB5048667 KB5048671 KB5048676 KB5048685 KB5048695 KB5048699 KB5048703 KB5048710 KB5048735 KB5048744 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.