Local kernel memory disclosure via out-of-bounds read
Published Jul 14, 2026 · Updated Jul 14, 2026
Out-of-bounds read in Microsoft Windows Cloud Files Mini Filter Driver allows local users to disclose information from kernel memory. Microsoft has not disclosed the affected routine or how attacker-controlled input causes the driver to read beyond its intended buffer boundary. Exploitation requires local low-privileged access and affects confidentiality without reported data modification or service interruption.
Summary
What happened
Out-of-bounds read in Microsoft Windows Cloud Files Mini Filter Driver allows local users to disclose information from kernel memory. Microsoft has not disclosed the affected routine or how attacker-controlled input causes the driver to read beyond its intended buffer boundary. Exploitation requires local low-privileged access and affects confidentiality without reported data modification or service interruption.
The record
- CVE
- CVE-2026-50401
- Published
- Jul 14, 2026
- Updated
- Jul 14, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-125
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 14, 2026CVE publishedPublication date reported by the CVE source.
- Jul 14, 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 <10.0.17763.9020
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.
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Technologies
Your stack
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Your stack
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