Local privilege escalation via buffer over-read
Published Sep 8, 2026 · Updated Sep 10, 2026
Buffer over-read in the Windows Volume Manager Extension Driver allows local users to elevate privileges on affected Windows systems. Microsoft has not disclosed the affected routine or how attacker-controlled input causes the driver to read beyond a buffer boundary. Successful exploitation requires existing low-privilege local access and grants higher privileges with confidentiality, integrity, and availability impact.
Summary
What happened
Buffer over-read in the Windows Volume Manager Extension Driver allows local users to elevate privileges on affected Windows systems. Microsoft has not disclosed the affected routine or how attacker-controlled input causes the driver to read beyond a buffer boundary. Successful exploitation requires existing low-privilege local access and grants higher privileges with confidentiality, integrity, and availability impact.
The record
- CVE
- CVE-2026-69582
- Published
- Sep 8, 2026
- Updated
- Sep 10, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-126, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 8, 2026CVE publishedPublication date reported by the CVE source.
- Sep 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=10.0.17763.0 <10.0.17763.9245
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
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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