Kernel memory corruption via IOCTL heap overflow
Published Sep 21, 2026 · Updated Sep 21, 2026
A heap-based buffer overflow in Moore Threads MTT S80 Driver Package 340.150 and earlier allows local users to corrupt kernel memory via an IOCTL. The mtdispkm64.sys IOCTL handler function sub_140001000 writes attacker-controlled input beyond a heap allocation; the public record does not identify the copied field or size calculation. Low-privileged local access is required, and the record does not disclose whether the corruption yields privilege escalation, code execution, or only a crash.
Summary
What happened
A heap-based buffer overflow in Moore Threads MTT S80 Driver Package 340.150 and earlier allows local users to corrupt kernel memory via an IOCTL. The mtdispkm64.sys IOCTL handler function sub_140001000 writes attacker-controlled input beyond a heap allocation; the public record does not identify the copied field or size calculation. Low-privileged local access is required, and the record does not disclose whether the corruption yields privilege escalation, code execution, or only a crash.
The record
- CVE
- CVE-2026-94424
- Published
- Sep 21, 2026
- Updated
- Sep 21, 2026
- Vendor
- Moore Threads
- Product
- MTT S80 Driver Package
- Classifications
- CWE-122, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 21, 2026CVE publishedPublication date reported by the CVE source.
- Sep 21, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=340.150
What conditions does exploitation require?
What is affected?
Published CVSS scores
No CVSS assessment is available in this record.
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.
Activity data is delayed. The latest report is Sep 28, 2026.
Weakness, pattern, technique
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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