Unauthenticated denial of service via out-of-bounds read
Published Sep 8, 2026 · Updated Sep 10, 2026
Out-of-bounds read in the Windows Key Distribution Center in Microsoft Windows allows remote attackers to interrupt service via network requests. Microsoft has not disclosed the affected routine, buffer, or request field beyond stating that the KDC reads outside a memory boundary. No authentication or user interaction is required, and the reported consequence is service interruption without confidentiality or integrity impact.
Summary
What happened
Out-of-bounds read in the Windows Key Distribution Center in Microsoft Windows allows remote attackers to interrupt service via network requests. Microsoft has not disclosed the affected routine, buffer, or request field beyond stating that the KDC reads outside a memory boundary. No authentication or user interaction is required, and the reported consequence is service interruption without confidentiality or integrity impact.
The record
- CVE
- CVE-2026-84001
- Published
- Sep 8, 2026
- Updated
- Sep 10, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-125, T1499.004
- Attack vector
- network
- Privileges
- unauthenticated
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
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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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