CVE-2026-2824 is a medium-severity command injection vulnerability affecting Comfast CF-E7 wireless access points running firmware version 2.6.0.9. The vulnerability exists in the web management interface, specifically in the function sub_441CF4 within the /cgi-bin/mbox-config endpoint when handling the 'destination' parameter under the ping_config section. Due to insufficient input validation or sanitization, an attacker can inject arbitrary shell commands via this parameter. The attack vector is remote network access to the device's web interface, requiring no authentication or user interaction, which significantly lowers the barrier for exploitation. The vulnerability could allow an attacker to execute arbitrary commands with the privileges of the web management process, potentially leading to full device compromise, unauthorized network access, or pivoting within the internal network. The vendor was notified but has not responded or issued a patch, and exploit code has been publicly released, increasing the risk of exploitation. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no authentication required (AT:N), no user interaction (UI:N), and partial impact on confidentiality, integrity, and availability (VC:L, VI:L, VA:L). No known exploits in the wild have been reported yet, but the presence of public exploit code elevates the threat level.

The vulnerability poses a significant risk to organizations deploying Comfast CF-E7 devices, especially in enterprise, educational, or public Wi-Fi environments. Successful exploitation can lead to arbitrary command execution on the device, enabling attackers to take full control of the affected access point. This can result in unauthorized access to internal networks, interception or manipulation of network traffic, disruption of wireless services, and potential lateral movement to other critical systems. Given that these devices often serve as network gateways or infrastructure components, compromise could undermine network security posture and confidentiality of sensitive data. The lack of vendor response and patch availability increases exposure time, and the public availability of exploit code may lead to opportunistic attacks. Organizations relying on these devices may face operational disruptions, data breaches, and reputational damage if the vulnerability is exploited.

Since no official patch is available, organizations should implement immediate compensating controls. First, restrict access to the device's web management interface by limiting it to trusted internal networks or management VLANs and blocking access from untrusted or public networks. Employ network segmentation to isolate vulnerable devices from critical assets. Monitor network traffic for unusual activity targeting the /cgi-bin/mbox-config endpoint or suspicious command execution patterns. Disable or restrict remote management features if not required. Consider deploying Web Application Firewalls (WAFs) or Intrusion Prevention Systems (IPS) with custom rules to detect and block command injection attempts targeting this endpoint. Regularly audit device firmware versions and plan for replacement or upgrade to devices from vendors with active security support. Maintain comprehensive network monitoring and incident response readiness to quickly detect and respond to exploitation attempts.