Local privilege escalation via stack buffer overflow
Published Sep 8, 2026 · Updated Sep 10, 2026
Stack-based buffer overflow in Microsoft Windows Storage Spaces Controller allows local users to elevate privileges on affected Windows hosts. Microsoft identifies the affected component and overflow class but has not disclosed the input path, routine, or unsafe copy operation that overruns the stack buffer. Exploitation requires authorized local access and grants higher privileges; no remote consequence is reported.
Summary
What happened
Stack-based buffer overflow in Microsoft Windows Storage Spaces Controller allows local users to elevate privileges on affected Windows hosts. Microsoft identifies the affected component and overflow class but has not disclosed the input path, routine, or unsafe copy operation that overruns the stack buffer. Exploitation requires authorized local access and grants higher privileges; no remote consequence is reported.
The record
- CVE
- CVE-2026-69290
- Published
- Sep 8, 2026
- Updated
- Sep 10, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-121, 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
No CVSS assessment is available in this record.
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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