Local privilege escalation via freed object reuse
Published Sep 8, 2026 · Updated Sep 9, 2026
Use-after-free in Windows NTFS allows local users with low privileges to elevate privileges through local filesystem activity. Microsoft identifies freed-memory reuse in NTFS but does not disclose the object, function, or crafted operation that triggers the stale reference. Exploitation requires existing low-privilege local access and high-complexity conditions; success grants higher privileges without another user's interaction.
Summary
What happened
Use-after-free in Windows NTFS allows local users with low privileges to elevate privileges through local filesystem activity. Microsoft identifies freed-memory reuse in NTFS but does not disclose the object, function, or crafted operation that triggers the stale reference. Exploitation requires existing low-privilege local access and high-complexity conditions; success grants higher privileges without another user's interaction.
The record
- CVE
- CVE-2026-69567
- Published
- Sep 8, 2026
- Updated
- Sep 9, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-416, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 8, 2026CVE publishedPublication date reported by the CVE source.
- Sep 9, 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=10.0.17763.0 <10.0.17763.9245
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.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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