CVE-2024-6768Public exploit

System reboot via malformed BLF owner-page value

Published Aug 12, 2024 · Updated Sep 15, 2025

Denial of service in Microsoft Windows CLFS.sys allows local users to reboot affected systems by opening a crafted BLF file. CLFS copies an unvalidated lsnOwnerPage value from the BLF client context, derives an invalid offset, and later loops in CClfsLogFcbPhysical::FlushLog until KeBugCheckEx forces a bugcheck. Low-privileged local access is sufficient, and repeated triggering interrupts the entire host rather than only the calling process.

CVSS severity6.8
Medium
EPSS probability2.49%
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

Denial of service in Microsoft Windows CLFS.sys allows local users to reboot affected systems by opening a crafted BLF file. CLFS copies an unvalidated lsnOwnerPage value from the BLF client context, derives an invalid offset, and later loops in CClfsLogFcbPhysical::FlushLog until KeBugCheckEx forces a bugcheck. Low-privileged local access is sufficient, and repeated triggering interrupts the entire host rather than only the calling process.

The record

CVE
CVE-2024-6768
Published
Aug 12, 2024
Updated
Sep 15, 2025
Vendor
Microsoft
Product
Windows Server 2019
Classifications
CWE-1284, T1499.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 12, 2024CVE publishedPublication date reported by the CVE source.
  2. Sep 15, 2025Record 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=10.0.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Microsoft · Windows Server 2019version=10.0.0
Microsoft · Windows 11version=10.0.0
Microsoft · Windows Server 2016version=10.0.0
Microsoft · Windows Server 2022version=10.0.0
Microsoft · Windows 10version=10.0.0

Published CVSS scores

6.8FortraCVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
5.5FortraCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/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 exploitPublished

Weakness, pattern, technique

CWE-1284Improper Validation of Specified Quantity in Input
T1499.004Application or System Exploitation

Public exploit references

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