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CVE-2026-50399 Details

Out-of-bounds read in Windows Kernel allows an authorized attacker to elevate privileges locally.

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:7.8 HIGHVector:CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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URL	Source(s)	Tag(s)
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50399	[email protected]	PatchVendor Advisory

CWE-ID	CWE Name	Source
CWE-125	Out-of-bounds Read	[email protected]

Product	Versions
microsoft windows 10 21h2	< 10.0.19044.7548
CPE cpe:2.3:o:microsoft:windows_10_21h2:::::::: Remediation No remediation found in references.
microsoft windows 10 22h2	< 10.0.19045.7548
CPE cpe:2.3:o:microsoft:windows_10_22h2:::::::: Remediation No remediation found in references.
microsoft windows 11 24h2	< 10.0.26100.8875
CPE cpe:2.3:o:microsoft:windows_11_24h2:::::::: Remediation No remediation found in references.
microsoft windows 11 25h2	< 10.0.26200.8875
CPE cpe:2.3:o:microsoft:windows_11_25h2:::::::: Remediation No remediation found in references.
microsoft windows 11 26h1	< 10.0.28000.2269 < 10.0.28000.2525
CPE cpe:2.3:o:microsoft:windows_11_26h1:::::::x64:* cpe:2.3:o:microsoft:windows_11_26h1:::::::arm64:* Remediation No remediation found in references.
microsoft windows server 2022	< 10.0.20348.5386
CPE cpe:2.3:o:microsoft:windows_server_2022:::::::: Remediation No remediation found in references.
microsoft windows server 2025	< 10.0.26100.33158
CPE cpe:2.3:o:microsoft:windows_server_2025:::::::: Remediation No remediation found in references.

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