CVE-2024-36424Public exploit

System crash via user-accessible driver IOCTLs

Published Aug 6, 2024 · Updated Mar 13, 2025

NULL pointer dereference in K7RKScan.sys in K7 Ultimate Security before 17.0.2019 allows local users to crash Windows via crafted IOCTLs. The driver accepts IOCTL codes 0x222010 and 0x222014 from the Everyone group and dereferences a NULL pointer while processing them. Any local low-privileged account can trigger a BSOD that terminates the operating system and running security processes.

CVSS severity5.5
Medium
EPSS probability0.99%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

NULL pointer dereference in K7RKScan.sys in K7 Ultimate Security before 17.0.2019 allows local users to crash Windows via crafted IOCTLs. The driver accepts IOCTL codes 0x222010 and 0x222014 from the Everyone group and dereferences a NULL pointer while processing them. Any local low-privileged account can trigger a BSOD that terminates the operating system and running security processes.

The record

CVE
CVE-2024-36424
Published
Aug 6, 2024
Updated
Mar 13, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-476, T1499
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 6, 2024CVE publishedPublication date reported by the CVE source.
  2. Mar 13, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
5.5CISA-ADPCVSS: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-476NULL Pointer Dereference
T1499Endpoint Denial of Service

Public exploit references

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

Technologies

Your stack

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Your stack

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