This vulnerability (CVE-2026-20818) involves the insertion of sensitive information into log files by the Windows Kernel in Windows Server 2016 (version 10.0.14393.0). An unauthorized attacker with local access can exploit this to disclose sensitive information. The vulnerability is classified under CWE-532, which concerns the insertion of sensitive data into log files. The CVSS v3.1 base score is 6.2, reflecting a medium severity with local attack vector, low attack complexity, no privileges required, and no user interaction needed. The confidentiality impact is high, while integrity and availability impacts are none. An official patch is available to remediate this issue.

An unauthorized local attacker can disclose sensitive information due to improper logging of sensitive data by the Windows Kernel. This could lead to information leakage that may aid further attacks or compromise confidentiality. There is no impact on integrity or availability. No known exploits are reported in the wild at this time.

An official patch is available for this vulnerability. It is recommended to apply the patch provided by Microsoft to Windows Server 2016 systems running version 10.0.14393.0 to remediate this issue. No additional mitigation steps are specified.