Authenticated network service interruption
Published Jul 14, 2026 · Updated Jul 14, 2026
Uncontrolled resource consumption in Microsoft Windows LSASS allows remote authenticated users to interrupt the service over a network. Microsoft has not disclosed the LSASS request path, attacker-controlled input, or resource that is consumed without an effective limit. Low-privileged network authentication is required; successful exploitation affects availability only, with no reported confidentiality or integrity impact.
Summary
What happened
Uncontrolled resource consumption in Microsoft Windows LSASS allows remote authenticated users to interrupt the service over a network. Microsoft has not disclosed the LSASS request path, attacker-controlled input, or resource that is consumed without an effective limit. Low-privileged network authentication is required; successful exploitation affects availability only, with no reported confidentiality or integrity impact.
The record
- CVE
- CVE-2026-49799
- Published
- Jul 14, 2026
- Updated
- Jul 14, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-400, T1499
- Attack vector
- network
- 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.
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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