Local privilege escalation to SYSTEM
Published Mar 12, 2024 · Updated May 3, 2025
Elevation of privilege in the Microsoft Windows SCSI Class System File allows local users to gain SYSTEM privileges. Microsoft has not published which SCSI class driver routine truncates a numeric value or how attacker-controlled input reaches that operation. Exploitation requires local low-privileged access but no user interaction and grants complete control as SYSTEM.
Summary
What happened
Elevation of privilege in the Microsoft Windows SCSI Class System File allows local users to gain SYSTEM privileges. Microsoft has not published which SCSI class driver routine truncates a numeric value or how attacker-controlled input reaches that operation. Exploitation requires local low-privileged access but no user interaction and grants complete control as SYSTEM.
The record
- CVE
- CVE-2024-21434
- Published
- Mar 12, 2024
- Updated
- May 3, 2025
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-197, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Mar 12, 2024CVE publishedPublication date reported by the CVE source.
- May 3, 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 <10.0.17763.5576
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
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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