CVE-2026-49799: CWE-400: Uncontrolled Resource Consumption in Microsoft Windows 10 Version 1607
Uncontrolled resource consumption in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to deny service over a network.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-49799) affects Windows 10 Version 1607 (build 10.0.14393.0) and is classified as CWE-400: Uncontrolled Resource Consumption. It occurs in the LSASS component, enabling an authorized attacker to trigger excessive resource usage remotely, resulting in denial of service. The CVSS v3.1 base score is 6.5 (medium severity), with network attack vector, low attack complexity, and no user interaction required. Microsoft has published an official fix for this vulnerability.
Potential Impact
An authorized attacker can exploit this vulnerability remotely to cause denial of service by exhausting system resources in the LSASS process. This disrupts availability but does not impact confidentiality or integrity.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49799 to remediate this vulnerability.
CVE-2026-49799: CWE-400: Uncontrolled Resource Consumption in Microsoft Windows 10 Version 1607
Description
Uncontrolled resource consumption in Windows Local Security Authority Subsystem Service (LSASS) allows an authorized attacker to deny service over a network.
CVSS v3.1
Score 6.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-49799) affects Windows 10 Version 1607 (build 10.0.14393.0) and is classified as CWE-400: Uncontrolled Resource Consumption. It occurs in the LSASS component, enabling an authorized attacker to trigger excessive resource usage remotely, resulting in denial of service. The CVSS v3.1 base score is 6.5 (medium severity), with network attack vector, low attack complexity, and no user interaction required. Microsoft has published an official fix for this vulnerability.
Potential Impact
An authorized attacker can exploit this vulnerability remotely to cause denial of service by exhausting system resources in the LSASS process. This disrupts availability but does not impact confidentiality or integrity.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49799 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-01T17:02:37.208Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49799","vendor":"Microsoft"}]
Threat ID: 6a566f6f68715ace43e6b594
Added to database: 07/14/2026, 17:18:39 UTC
Last enriched: 08/13/2026, 14:25:27 UTC
Last updated: 08/26/2026, 22:52:11 UTC
Views: 59
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