Authenticated service interruption via buffer over-read
Published Jul 14, 2026 · Updated Jul 14, 2026
Buffer over-read in Microsoft Windows Hyper-V allows remote authenticated users to interrupt service through an adjacent-network request. Microsoft has not disclosed the specific parser, buffer, or unchecked operation that reads beyond the intended boundary. High-privileged access to the adjacent Hyper-V interface is required, and the documented consequence is limited to availability.
Summary
What happened
Buffer over-read in Microsoft Windows Hyper-V allows remote authenticated users to interrupt service through an adjacent-network request. Microsoft has not disclosed the specific parser, buffer, or unchecked operation that reads beyond the intended boundary. High-privileged access to the adjacent Hyper-V interface is required, and the documented consequence is limited to availability.
The record
- CVE
- CVE-2026-50485
- Published
- Jul 14, 2026
- Updated
- Jul 14, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-126, T1499
- Attack vector
- adjacent
- Privileges
- admin
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
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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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