SYSTEM privilege escalation via kernel integer underflow
Published Apr 11, 2023 · Updated Jan 23, 2025
Integer underflow in the Microsoft Windows kernel allows local users on affected Windows releases to elevate privileges to SYSTEM. Microsoft identifies the weakness but has not disclosed the affected kernel function, arithmetic operation, or attacker-controlled input. Exploitation requires an existing low-privileged local account and can provide full control of protected data and system operations without user interaction.
Summary
What happened
Integer underflow in the Microsoft Windows kernel allows local users on affected Windows releases to elevate privileges to SYSTEM. Microsoft identifies the weakness but has not disclosed the affected kernel function, arithmetic operation, or attacker-controlled input. Exploitation requires an existing low-privileged local account and can provide full control of protected data and system operations without user interaction.
The record
- CVE
- CVE-2023-28293
- Published
- Apr 11, 2023
- Updated
- Jan 23, 2025
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-191, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 11, 2023CVE publishedPublication date reported by the CVE source.
- Jan 23, 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=10.0.10240.0 <10.0.10240.19869
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
- Windows 11 22H2 Kernel Privilege Elevation EDB-51544proof of concept · unverified
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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