CVE-2025-15076: Path Traversal in Tenda CH22

The Path Traversal vulnerability in Tenda CH22 allows an attacker to bypass access controls and read arbitrary files on the device's file system. This could expose configuration files, firmware images, or even user credentials stored on the router. Successful exploitation could lead to complete compromise of the device, enabling the attacker to modify settings, intercept network traffic, or use the router as a pivot point to attack other systems on the network. The availability of a public exploit significantly increases the likelihood of widespread exploitation.

1. Reserved2025-12-24
2. Published2025-12-25
3. Modified2026-02-24
4. EPSS updated2026-03-23

As a fix is not currently available, mitigation strategies are crucial. First, isolate the Tenda CH22 router from the internet by placing it behind a firewall or using network segmentation. Restrict access to the router's management interface to trusted networks only. Implement strict access control lists (ACLs) to limit inbound and outbound traffic. Regularly monitor router logs for suspicious activity, such as unusual file access attempts or unauthorized configuration changes. Consider replacing the vulnerable device with a more secure alternative.