CVE-2022-26861 Explained : Impact and Mitigation
Learn about CVE-2022-26861, a high severity Dell BIOS vulnerability allowing arbitrary code execution. Find out affected versions, impact, and mitigation steps.
Dell BIOS versions contain a vulnerability labeled as Insecure Automated Optimization. This vulnerability allows a local authenticated malicious user to execute arbitrary code during System Management Mode (SMM) by exploiting it through malicious input via System Management Interrupt (SMI).
Understanding CVE-2022-26861
This section covers the critical details regarding the CVE-2022-26861 vulnerability.
What is CVE-2022-26861?
CVE-2022-26861 is a security vulnerability found in Dell BIOS versions, enabling local authenticated malicious users to execute arbitrary code by utilizing malicious input during SMM.
The Impact of CVE-2022-26861
The vulnerability poses a high severity threat, with a CVSS base score of 7.9. It affects the confidentiality and integrity of the system, requiring high privileges to exploit.
Technical Details of CVE-2022-26861
Providing a deeper dive into the technical aspects of the CVE-2022-26861 vulnerability.
Vulnerability Description
The vulnerability in Dell BIOS versions allows attackers to execute arbitrary code during SMM, compromising system confidentiality and integrity.
Affected Systems and Versions
The vulnerability impacts Dell CPG BIOS versions including Gen7, Gen8, Gen9, Gen10, Gen11, 21Q1-Q4.
Exploitation Mechanism
Exploitation of this vulnerability involves sending malicious input via SMI by a local authenticated malicious user to achieve arbitrary code execution during SMM.
Mitigation and Prevention
Guidelines for mitigating and preventing the exploitation of CVE-2022-26861.
Immediate Steps to Take
It is recommended to apply patches and security updates provided by Dell promptly to address the vulnerability.
Long-Term Security Practices
Implementing secure BIOS update procedures, restricting physical access to devices, and monitoring system behavior can enhance long-term security.
Patching and Updates
Regularly check for BIOS updates and apply them as soon as they are available to protect systems from potential exploits.