Local SYSTEM privilege escalation
Published Jul 14, 2021 · Updated Aug 10, 2026
Privilege escalation in the Windows kernel in affected Microsoft Windows releases allows local users to gain SYSTEM privileges. Microsoft has not disclosed the kernel component, entry point, crafted input, or incorrect operation that causes the privilege boundary failure. Exploitation requires existing low-privilege local access and can grant complete control within the same Windows security scope.
Summary
What happened
Privilege escalation in the Windows kernel in affected Microsoft Windows releases allows local users to gain SYSTEM privileges. Microsoft has not disclosed the kernel component, entry point, crafted input, or incorrect operation that causes the privilege boundary failure. Exploitation requires existing low-privilege local access and can grant complete control within the same Windows security scope.
The record
- CVE
- CVE-2021-34514
- Published
- Jul 14, 2021
- Updated
- Aug 10, 2026
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-269, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 14, 2021CVE 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 <10.0.10240.19003
What conditions does exploitation require?
What is affected?
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
No public exploit references are available in this record.
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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