SYSTEM escalation via kernel-mode IOCTL proxying
Published Jun 11, 2024 · Updated Aug 10, 2026
Untrusted pointer dereference in Microsoft Windows kernel-mode drivers allows local users to execute code with SYSTEM privileges. In ks.sys, UnserializePropertySet reissues user-controlled IOCTL_KS_PROPERTY buffers through KsSynchronousIoControlDevice as KernelMode, bypassing request-origin checks. Low-privileged code execution is required, and successful exploitation gives complete SYSTEM control.
Summary
What happened
Untrusted pointer dereference in Microsoft Windows kernel-mode drivers allows local users to execute code with SYSTEM privileges. In ks.sys, UnserializePropertySet reissues user-controlled IOCTL_KS_PROPERTY buffers through KsSynchronousIoControlDevice as KernelMode, bypassing request-origin checks. Low-privileged code execution is required, and successful exploitation gives complete SYSTEM control.
The record
- CVE
- CVE-2024-35250
- Published
- Jun 11, 2024
- Updated
- Aug 10, 2026
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-822, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jun 11, 2024CVE publishedPublication date reported by the CVE source.
- Aug 10, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0.10240.0 <10.0.10240.20680
What conditions does exploitation require?
What is affected?
Published CVSS scores
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.
Weakness, pattern, technique
Public exploit references
- varwara CVE-2024-35250 proof of conceptfunctional · demonstrated
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Reported exploitation
- CISA Known Exploited Vulnerabilities entryknown exploited catalog
Technologies
Your stack
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Your stack
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