CVE-2021-26863 : Security Advisory and Response
Learn about CVE-2021-26863, a Win32k Elevation of Privilege Vulnerability impacting Windows 10 and Windows Server. Find out the impact, affected systems, and mitigation strategies.
Windows Win32k Elevation of Privilege Vulnerability was disclosed by Microsoft on March 9, 2021. This CVE affects various versions of Windows, including Windows 10 and Windows Server.
Understanding CVE-2021-26863
This section will delve into the details of the CVE, its impact, technical aspects, and mitigation strategies.
What is CVE-2021-26863?
CVE-2021-26863 refers to a Win32k Elevation of Privilege Vulnerability in Windows systems. This vulnerability could allow an attacker to escalate privileges on a compromised system.
The Impact of CVE-2021-26863
The impact of this vulnerability is rated as HIGH, with a CVSS base score of 7.0. Successful exploitation could result in unauthorized privilege escalation on the affected systems.
Technical Details of CVE-2021-26863
This section will cover technical aspects such as the vulnerability description, affected systems, and exploitation mechanism.
Vulnerability Description
The vulnerability allows attackers to elevate privileges on Windows systems, potentially leading to complete system compromise.
Affected Systems and Versions
Windows 10 versions 1803, 1809, 1909, 2004, 20H2, Windows Server 2019, and various installations are affected by this vulnerability.
Exploitation Mechanism
Attackers can exploit this vulnerability by executing specially crafted applications on the targeted system to escalate their privileges.
Mitigation and Prevention
To protect your systems from CVE-2021-26863, certain immediate steps can be taken along with long-term security practices.
Immediate Steps to Take
Ensure timely installation of security patches provided by Microsoft. Conduct security assessments to detect any signs of exploitation.
Long-Term Security Practices
Implement the principle of least privilege, regularly update security configurations, and monitor system activity for any suspicious behavior.
Patching and Updates
Stay informed about security updates released by Microsoft, subscribe to relevant security bulletins, and promptly apply patches to vulnerable systems.