Privilege escalation via registry log integer overflow
Published Aug 8, 2023 · Updated Aug 10, 2026
Out-of-bounds reads in the Windows kernel allow local users on affected Windows builds to elevate privileges through a crafted registry log. An integer calculation in the Configuration Manager registry .LOG parser overflows while processing a crafted log, causing reads beyond the log buffer. A low-privileged local account must trigger recovery of a malformed registry hive log; successful exploitation grants elevated kernel privileges.
Summary
What happened
Out-of-bounds reads in the Windows kernel allow local users on affected Windows builds to elevate privileges through a crafted registry log. An integer calculation in the Configuration Manager registry .LOG parser overflows while processing a crafted log, causing reads beyond the log buffer. A low-privileged local account must trigger recovery of a malformed registry hive log; successful exploitation grants elevated kernel privileges.
The record
- CVE
- CVE-2023-35386
- Published
- Aug 8, 2023
- Updated
- Aug 10, 2026
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-125, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Aug 8, 2023CVE 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 <10.0.10240.20107
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.
Public exploit references
- Crafted registry hive log proof-of-concept filesproof of concept · demonstrated
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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