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CVE-2026-84011 is an incorrect authorization vulnerability in the Windows SMB Client on Windows 11 version 23H2. It allows an authorized local attacker to bypass a security feature. The vulnerability has a medium severity rating with a CVSS score of 5.5. Microsoft has released an official fix for this issue.

CVE-2026-84011 is a vulnerability classified as CWE-863 (Incorrect Authorization) affecting the Windows SMB Client in Windows 11 version 23H2. The flaw permits an authorized local attacker to bypass a security feature, potentially leading to unauthorized actions. The vulnerability has a CVSS v3.1 base score of 5.5, indicating medium severity. Multiple specific builds of Windows 11 23H2 are affected, and Microsoft has issued an official patch to remediate the issue.

CVE-2026-84011 is an incorrect authorization vulnerability in the Windows SMB Client on Windows 11 version 23H2. It allows an authorized local attacker to bypass a security feature. The vulnerability has a medium severity rating with a CVSS score of 5.5. Microsoft has released an official fix for th

CVE-2026-84011: CWE-863: Incorrect Authorization in Microsoft Windows 11 version 23H2

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