CVE-2026-9389
Tenda · F456
A security vulnerability has been identified in Tenda F456 routers, potentially exposing the device to unauthorized administrative control.
Executive summary
A critical security vulnerability in the Tenda F456 router may allow an attacker to gain unauthorized access or control over the device.
Vulnerability
The vulnerability relates to a security flaw in the firmware of the Tenda F456. While specific technical details are pending, such vulnerabilities in consumer-grade routers typically involve authentication bypass or command injection flaws.
Business impact
With a CVSS score of 8.8, the potential for full device compromise is significant. An attacker who gains control of the router can intercept traffic, perform man-in-the-middle attacks, and pivot into the internal network, causing severe risk to all connected endpoints.
Remediation
Immediate Action: Check the Tenda support website for firmware updates and apply them to all F456 devices immediately.
Proactive Monitoring: Monitor for unexpected traffic patterns or changes to device configuration settings that suggest unauthorized tampering.
Compensating Controls: Disable remote management features on the router and ensure that the administrative interface is not exposed to the public internet.
Exploitation status
Public Exploit Available: false
Analyst recommendation
Network perimeter devices are high-value targets for attackers. Users of Tenda F456 hardware should prioritize the deployment of vendor-supplied patches to secure their local network gateway against potential remote exploitation.