SYSTEM privilege escalation via unchecked license entry dereference
Published Aug 13, 2024 · Updated Jul 10, 2025
Untrusted pointer dereference in Microsoft Windows kernel-mode drivers allows local users to gain SYSTEM privileges through crafted input. In CLIPSP.SYS license-update field type 0x20 handling, code dereferences a truncated entry without first verifying that its declared size covers the read. Microsoft classifies the result as privilege escalation, while the published Talos analysis demonstrates a blue-screen crash and does not disclose the privilege-escalation chain.
Summary
What happened
Untrusted pointer dereference in Microsoft Windows kernel-mode drivers allows local users to gain SYSTEM privileges through crafted input. In CLIPSP.SYS license-update field type 0x20 handling, code dereferences a truncated entry without first verifying that its declared size covers the read. Microsoft classifies the result as privilege escalation, while the published Talos analysis demonstrates a blue-screen crash and does not disclose the privilege-escalation chain.
The record
- CVE
- CVE-2024-38187
- Published
- Aug 13, 2024
- Updated
- Jul 10, 2025
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-822, CWE-125, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 13, 2024CVE publishedPublication date reported by the CVE source.
- Jul 10, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0.17763.0 <10.0.17763.6054
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
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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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