CVE-2026-4467 is a remote command injection vulnerability identified in Comfast CF-AC100 wireless access point firmware version 2.6.0.8. The vulnerability resides in an unspecified function accessed via the CGI endpoint /cgi-bin/mbox-config with parameters 'method=SET&section=wireless_device_dissoc'. Improper input validation or sanitization allows attackers to inject arbitrary shell commands, which the device executes with elevated privileges. The attack vector is network-based and does not require user interaction, but it does require high privileges, implying that some form of authentication or elevated access might be necessary to exploit. The vendor was notified early but has not issued any response or patch, leaving the device exposed. The CVSS 4.0 vector indicates network attack vector (AV:N), low attack complexity (AC:L), no user interaction (UI:N), and high privileges required (PR:H). The impact on confidentiality, integrity, and availability is low to limited, but successful exploitation could allow attackers to manipulate device settings, disrupt wireless connectivity, or pivot into internal networks. No known active exploitation has been reported, but public exploit code availability increases risk. The lack of vendor response and patch availability heightens the urgency for organizations to implement compensating controls.

The primary impact of CVE-2026-4467 is unauthorized remote command execution on Comfast CF-AC100 devices, potentially allowing attackers to alter device configuration, disrupt wireless services, or use the device as a foothold for lateral movement within an internal network. Although the CVSS score is medium, the vulnerability could lead to partial compromise of device confidentiality, integrity, and availability. Organizations relying on these devices for wireless access may experience service outages or data interception if attackers manipulate wireless dissociation settings. The absence of vendor patches increases the risk of exploitation, especially in environments where these devices are exposed to untrusted networks. This vulnerability could be leveraged in targeted attacks against enterprises, service providers, or critical infrastructure using Comfast devices, potentially impacting business continuity and network security.

Since no official patch is available, organizations should implement the following mitigations: 1) Restrict network access to the management interface of Comfast CF-AC100 devices by placing them behind firewalls or VLAN segmentation to limit exposure to untrusted networks. 2) Disable or restrict access to the vulnerable CGI endpoint (/cgi-bin/mbox-config) if possible, or apply web application firewall (WAF) rules to detect and block suspicious requests targeting this endpoint. 3) Enforce strong authentication and limit administrative access to trusted personnel only, reducing the risk of privilege escalation. 4) Monitor device logs and network traffic for unusual commands or patterns indicative of exploitation attempts. 5) Consider replacing or upgrading devices to models with vendor-supported firmware that addresses this vulnerability. 6) If feasible, isolate vulnerable devices from critical network segments to minimize impact in case of compromise. 7) Stay alert for vendor updates or community patches and apply them promptly once available.