CVE-2021-26892 : Vulnerability Insights and Analysis
Learn about CVE-2021-26892, a Medium severity vulnerability published by Microsoft. Understand its impact, affected systems, and mitigation steps for securing Windows systems.
Windows Extensible Firmware Interface Security Feature Bypass Vulnerability was published by Microsoft on March 9, 2021. It has a CVSS base score of 6.2 (Medium).
Understanding CVE-2021-26892
This CVE involves a security feature bypass in Windows systems, impacting various versions of Windows operating systems and Windows Server.
What is CVE-2021-26892?
The CVE-2021-26892 is categorized as a Security Feature Bypass vulnerability affecting Windows systems, allowing an attacker to bypass certain security features.
The Impact of CVE-2021-26892
The impact of this vulnerability lies in the ability of a malicious actor to bypass security mechanisms in the affected Windows versions, potentially leading to unauthorized access and escalation of privileges.
Technical Details of CVE-2021-26892
This section provides details on the vulnerability, affected systems, and the exploitation mechanism.
Vulnerability Description
The CVE-2021-26892 vulnerability enables attackers to circumvent security features in Windows operating systems, posing a risk of unauthorized access.
Affected Systems and Versions
The vulnerability impacts several versions of Windows operating systems, including Windows 10 versions 1803, 1809, 1909, 2004, 20H2, 1607, as well as Windows Server 2019, 2016, and their Core installations.
Exploitation Mechanism
Attackers can exploit this vulnerability to bypass security controls in Windows EFI boot sequences, potentially leading to unauthorized system access.
Mitigation and Prevention
In response to CVE-2021-26892, users and administrators should take immediate steps to secure their systems and implement long-term security practices.
Immediate Steps to Take
Install security updates provided by Microsoft promptly and monitor for any unauthorized system access attempts.
Long-Term Security Practices
Regularly update systems with the latest security patches, implement least privilege access, and conduct security assessments to mitigate future vulnerabilities.
Patching and Updates
Ensure that all affected Windows systems receive the necessary security patches and updates to address the CVE-2021-26892 vulnerability.