CVE-2021-27093: 
vulnerability analysis and mitigation

The Windows Kernel Information Disclosure Vulnerability (CVE-2021-27093) was identified and disclosed in April 2021. This vulnerability affects various versions of Microsoft Windows operating systems, including Windows 10, Windows 8.1, and Windows 7 SP1. The vulnerability was initially reported to Microsoft and assigned on February 10, 2021 (CVE MITRE).

The vulnerability has been assigned a CVSS v3.1 base score of 5.5 (Medium) with the vector string CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N. Under CVSS v2.0, it received a base score of 2.1 (Low) with the vector string (AV:L/AC:L/Au:N/C:P/I:N/A:N). This indicates that the vulnerability requires local access, has low attack complexity, requires low privileges, and can result in high confidentiality impact without affecting integrity or availability (NVD NIST).

The vulnerability could allow an attacker to obtain information disclosure from the Windows Kernel. The impact is primarily focused on confidentiality, with no direct impact on system integrity or availability (NVD NIST).

Microsoft has released security updates to address this vulnerability. The fix is available through the standard Windows Update channel (MSRC ADVISORY).