Authenticated service interruption via invalid network input
Published Sep 9, 2025 · Updated Sep 9, 2025
Improper input validation in Windows LSASS allows remote authenticated users to interrupt service through network input. Microsoft has not disclosed the specific input, parsing path, or invalid operation inside LSASS that triggers the condition. Low-privileged network access is sufficient, and the documented consequence is limited to availability without data disclosure or modification.
Summary
What happened
Improper input validation in Windows LSASS allows remote authenticated users to interrupt service through network input. Microsoft has not disclosed the specific input, parsing path, or invalid operation inside LSASS that triggers the condition. Low-privileged network access is sufficient, and the documented consequence is limited to availability without data disclosure or modification.
The record
- CVE
- CVE-2025-53809
- Published
- Sep 9, 2025
- Updated
- Sep 9, 2025
- Vendor
- Microsoft
- Product
- Windows Server 2025 (Server Core installation)
- Classifications
- CWE-20, T1499
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 9, 2025CVE publishedPublication date reported by the CVE source.
- Sep 9, 2025Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=10.0.26100.0 <10.0.26100.6584
What conditions does exploitation require?
What is affected?
Published CVSS scores
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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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