ExploitPublished 18 Aug 2025

Tenda AC20 16.03.08.12 · Command Injection

Source Exploit-DB RSS Feed

Severity

Medium

Rated by Threat Radar

Data as of 15 Nov 2025, 23:42 UTC

What to do

AI-suggested

Since no official patches are currently available, organizations should first identify and inventory all Tenda AC20 routers running firmware version 16.03.08.12. Immediate mitigation steps include isolating vulnerable routers from critical network segments and restricting remote management access via firewall rules or network segmentation. Disable any unnecessary remote administration features and change default credentials to strong, unique passwords. Monitor network traffic for unusual patterns indicative of exploitation attempts. Employ intrusion detection/prevention systems (IDS/IPS) with signatures targeting command injection attempts. Engage with Tenda support channels to seek firmware updates or security advisories. Consider replacing vulnerable devices with models that have active security support. Regularly update and audit network device firmware and configurations to prevent similar vulnerabilities.

Description

Tenda AC20 16.03.08.12 - Command Injection

Impact

For European organizations, exploitation of this vulnerability could lead to unauthorized control over network routers, resulting in interception and manipulation of sensitive communications, disruption of internet connectivity, and potential lateral movement into internal networks. This could compromise confidentiality of corporate data, integrity of network traffic, and availability of critical services. Sectors relying heavily on secure and stable network infrastructure, such as finance, healthcare, and government, are particularly at risk. The attack could also facilitate further malware deployment or espionage activities. Given the router's role as a network gateway, the impact extends beyond a single device to the entire organizational network, potentially affecting multiple users and systems.

Indicators of compromise

Exploit source code

Exploit code for Tenda AC20 16.03.08.12 - Command InjectionC/C++ · 18,143 characters

/*
 * Exploit Title : Tenda AC20 16.03.08.12 - Command Injection
 * Author       : Byte Reaper
 * CVE          : CVE-2025-9090 
 * Description:  A vulnerability was identified in Tenda AC20 16.03.08.12. Affected is the function websFormDefine of the file /goform/telnet of the component Telnet Service.
 * target endpoint : /goform/telnet
 * place in service : http://<IP>
 * full format target url : http://<IP>/goform/telnet
 * Exploitation plan:
 * 1. Build full URL
 * 2. Prepare POST data (Sleep…

References

Community reviews

Loading reviews…