Missing Authorization in Microsoft Windows and Windows Server - CVE-2026-119396

Vulnerability identifier: #VU165217

CSH Severity: Low

CVSS v4: 7.3 [CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N]

CVE-ID: CVE-2026-119396

CWE-ID: CWE-862

Exploitation vector: Local access

Exploit availability: No public exploit available

The vulnerability allows a local user to tamper with protected data, disclose sensitive information, and partially disrupt availability.

The vulnerability exists due to missing authorization in the Windows Remote Access API when handling local API operations. A local user can perform operations without the required authorization to access or modify protected data and impair availability.

Microsoft Windows
Windows Server

Install security update from vendor's website.

Microsoft Windows - addressed in versions 10 21H2 10.0.19044.7846, 10 22H2 10.0.19045.7846, 10 1607 10.0.14393.9688, 10 1809 10.0.17763.9487, 11 23H2 10.0.22631.7711, 11 24H2 10.0.26100.9911, 11 24H2 10.0.26100.9974, 11 25H2 10.0.26200.9911, 11 25H2 10.0.26200.9974, 11 26H1 10.0.28000.3501
Windows Server - addressed in versions 2016 10.0.14393.9688, 2019 10.0.17763.9487, 2022 10.0.20348.5870, 2025 10.0.26100.33730, 2025 10.0.26100.33822

• https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2026-119396
• https://support.microsoft.com/help/5131291

• Multiple vulnerabilities in Microsoft Windows