CRITICAL 9.3 Microsoft

CVE-2026-49798

Windows Kernel Elevation of Privilege Vulnerability

Microsoft Security Update 2026-Jul: Windows Kernel Elevation of Privilege Vulnerability

Affected Products

Windows 10 Version 1809 for 32-bit Systems
Windows 10 Version 1809 for x64-based Systems
Windows Server 2019
Windows Server 2019 (Server Core installation)
Windows Server 2022
Windows 10 Version 21H2 for 32-bit Systems
Windows 10 Version 21H2 for ARM64-based Systems
Windows 10 Version 21H2 for x64-based Systems

References

Published: 2026-07-14 · Source: Microsoft · Feed updated: 2026-08-04

This critical severity vulnerability with a CVSS score of 9.3 was published on 2026-07-14 via Microsoft. Affected: Windows 10 Version 1809 for 32-bit Systems, Windows 10 Version 1809 for x64-based Systems, Windows Server 2019 and 5 more.

Risk Timeline

CVE Disclosed2026-07-14 · 20 days ago

Remediation Resources

Official Advisory

msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49798

NVD / MITRE

nvd.nist.gov/vuln/detail/CVE-2026-49798

Related Vulnerabilities

CVE	Title	Severity	CVSS
CVE-2026-57092	Microsoft Windows VMSwitch Elevation of Privilege Vulnerability	CRITICAL	9.9
CVE-2026-42990	SQL Server ODBC driver Elevation of Privilege Vulnerability	CRITICAL	9.8
CVE-2026-49172	Windows FTP Service Remote Code Execution Vulnerability	CRITICAL	9.8
CVE-2026-54990	Remote Desktop Client Remote Code Execution Vulnerability	CRITICAL	9.8
CVE-2026-50447	Windows Message Queuing Service (MSMQ) Remote Code Execution Vulnerability	CRITICAL	9.8
CVE-2026-50518	Windows DHCP Server Remote Code Execution Vulnerability	CRITICAL	9.8

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