CVE-2024-49093

Local privilege escalation

Published Dec 10, 2024 · Updated Jun 9, 2026

Elevation of privilege in Microsoft Windows ReFS before build 10.0.26100.2605 allows local users to gain elevated privileges. Microsoft identifies an incorrect conversion between numeric types, but has not published the affected ReFS code locus or untrusted value being converted. Exploitation requires local low-privileged access, needs no user interaction, and can grant control beyond the vulnerable ReFS component.

CVSS severity8.8
High
EPSS probability0.94%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Elevation of privilege in Microsoft Windows ReFS before build 10.0.26100.2605 allows local users to gain elevated privileges. Microsoft identifies an incorrect conversion between numeric types, but has not published the affected ReFS code locus or untrusted value being converted. Exploitation requires local low-privileged access, needs no user interaction, and can grant control beyond the vulnerable ReFS component.

The record

CVE
CVE-2024-49093
Published
Dec 10, 2024
Updated
Jun 9, 2026
Vendor
Microsoft
Product
Windows Server 2025 (Server Core installation)
Classifications
CWE-681, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 10, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 9, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.0.26100.0 <10.0.26100.2605

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Windows Server 2025 (Server Core installation)version=10.0.26100.0 <10.0.26100.2605
Microsoft · Windows 11, version 24H2version=10.0.26100.0 <10.0.26100.2605
Microsoft · Windows Server 2025version=10.0.26100.0 <10.0.26100.2605

Published CVSS scores

8.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-681Incorrect Conversion between Numeric Types
T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo