CVE-2021-26106 Explained : Impact and Mitigation
Learn about CVE-2021-26106, a high-severity vulnerability in Fortinet FortiAP-W2, FortiAP-S, and FortiAP devices. Find out the impact, technical details, affected versions, and mitigation steps.
This CVE-2021-26106 article provides an in-depth look at a vulnerability affecting Fortinet FortiAP-W2, FortiAP-S, and FortiAP devices.
Understanding CVE-2021-26106
CVE-2021-26106 is a vulnerability in Fortinet FortiAP's console versions 6.4.1 through 6.4.5 and 6.2.4 through 6.2.5 that allows authenticated attackers to execute unauthorized commands.
What is CVE-2021-26106?
The vulnerability involves an improper neutralization of special elements in an OS command, enabling attackers to run unauthorized commands using the kdbg CLI command with specifically crafted arguments.
The Impact of CVE-2021-26106
With a CVSS base score of 7.8 (High Severity), this vulnerability has a significant impact on the confidentiality, integrity, and availability of affected systems. Attackers can execute unauthorized commands, leading to potential data breaches and system compromise.
Technical Details of CVE-2021-26106
This section covers the specifics of the vulnerability.
Vulnerability Description
The vulnerability exists in the FortiAP console versions 6.4.1 through 6.4.5 and 6.2.4 through 6.2.5, allowing authenticated attackers to execute unauthorized commands.
Affected Systems and Versions
Fortinet FortiAP-W2 6.2.4 through 6.2.5, FortiAP-S 6.2.4 through 6.2.5, and FortiAP 6.4.1 through 6.4.5 are affected by this vulnerability.
Exploitation Mechanism
By running the kdbg CLI command with specially crafted arguments, authenticated attackers can exploit this vulnerability to execute unauthorized commands on the affected systems.
Mitigation and Prevention
Protecting your systems from CVE-2021-26106 is crucial to maintaining security.
Immediate Steps to Take
Update the firmware of FortiAP devices to versions that address the vulnerability. Consider restricting access to the console interface to trusted users only.
Long-Term Security Practices
Implement network segmentation, regularly monitor for unauthorized access attempts, and educate users on best security practices.
Patching and Updates
Stay informed about security patches released by Fortinet and apply them promptly to mitigate the risk of exploitation.