Local privilege escalation via undisclosed integer overflow
Published Dec 12, 2023 · Updated Jan 1, 2025
Integer overflow in the Microsoft Windows SysMain Service allows local users on affected Windows builds to gain elevated privileges. Microsoft identifies the weakness as CWE-190 but has not published the affected function, arithmetic operation, or input path that triggers the overflow. Local low-privilege access is required; successful exploitation grants high-impact control within the existing operating-system security boundary.
Summary
What happened
Integer overflow in the Microsoft Windows SysMain Service allows local users on affected Windows builds to gain elevated privileges. Microsoft identifies the weakness as CWE-190 but has not published the affected function, arithmetic operation, or input path that triggers the overflow. Local low-privilege access is required; successful exploitation grants high-impact control within the existing operating-system security boundary.
The record
- CVE
- CVE-2023-35644
- Published
- Dec 12, 2023
- Updated
- Jan 1, 2025
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-190, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Dec 12, 2023CVE publishedPublication date reported by the CVE source.
- Jan 1, 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 <10.0.17763.5206
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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