CVE-2025-11523 is a command injection vulnerability identified in the Tenda AC7 router firmware version 15.03.06.44. The vulnerability resides in an unspecified portion of the /goform/AdvSetLanip endpoint, specifically involving the lanIp parameter. By manipulating this parameter, an attacker can inject and execute arbitrary system commands on the router remotely. The attack vector is network-based (AV:N), requires low attack complexity (AC:L), no privileges (PR:L) or user interaction (UI:N), and has partial impacts on confidentiality, integrity, and availability (VC:L, VI:L, VA:L). The vulnerability does not require authentication, making it accessible to remote attackers scanning for vulnerable devices. The exploit code is publicly available, increasing the risk of exploitation despite no current reports of active attacks. The router’s compromised state could allow attackers to intercept or redirect network traffic, deploy malware, or use the device as a foothold for further network intrusion. No official patches or vendor advisories have been published at the time of disclosure, leaving affected devices exposed. The vulnerability highlights the risks of insecure input validation in router management interfaces, a common attack surface in consumer and SMB networking equipment.

The impact of CVE-2025-11523 on organizations worldwide can be significant, especially for those relying on Tenda AC7 routers in home, small office, or branch office environments. Successful exploitation allows remote attackers to execute arbitrary commands on the router, potentially leading to full device compromise. This can result in interception or manipulation of network traffic, unauthorized access to internal networks, disruption of internet connectivity, and use of the device as a pivot point for lateral movement or launching attacks against other targets. The compromise of network infrastructure devices undermines confidentiality, integrity, and availability of organizational data and services. Given the router’s role as a gateway, attackers could also deploy persistent backdoors or malware, complicating detection and remediation. The public availability of exploit code increases the likelihood of opportunistic attacks, including automated scanning and exploitation by botnets or cybercriminal groups. Organizations with limited IT security resources or lacking network segmentation are particularly vulnerable. The absence of patches exacerbates the risk, necessitating immediate mitigation to reduce exposure.

1. Immediately disable remote management interfaces on Tenda AC7 routers to prevent external exploitation. 2. Restrict access to the router’s management interface to trusted internal IP addresses only, using firewall rules or access control lists. 3. Implement network segmentation to isolate vulnerable routers from critical internal systems and sensitive data. 4. Monitor network traffic for unusual patterns or connections indicative of exploitation attempts, such as unexpected command execution or outbound connections from the router. 5. Regularly audit router configurations and logs for signs of compromise or unauthorized changes. 6. Until an official patch is released, consider replacing affected routers with devices from vendors with a stronger security track record or that have issued timely patches. 7. Educate users and administrators about the risks of exposing router management interfaces to the internet. 8. Follow vendor channels closely for updates or firmware patches addressing this vulnerability and apply them promptly once available. 9. Employ intrusion detection/prevention systems capable of detecting command injection attempts targeting router management endpoints. 10. Use network-based anomaly detection tools to identify deviations from normal router behavior.