Tenda CH22 öffentlicher Pfadübersprung

The Path Traversal vulnerability in Tenda CH22 allows an attacker to bypass intended access restrictions and retrieve files from arbitrary locations on the router's file system. This could expose configuration files, firmware images, or even user credentials stored on the device. Successful exploitation could lead to complete compromise of the router, enabling the attacker to modify settings, intercept network traffic, or use the router as a pivot point for further attacks on the internal network. The availability of a public exploit significantly elevates the risk, as it lowers the barrier to entry for malicious actors.

Home and small office networks relying on Tenda CH22 routers are particularly at risk. Users with exposed routers or those using default configurations are especially vulnerable. Shared hosting environments utilizing Tenda CH22 devices for network management are also at increased risk.

1. 2025-12-25Disclosure

   disclosure

1. Reserviert2025-12-24
2. Veröffentlicht2025-12-25
3. Geändert2026-02-24
4. EPSS aktualisiert2026-03-23

Since a patch is not currently available for CVE-2025-15076, mitigation focuses on reducing the attack surface and detecting exploitation attempts. Network segmentation is a primary defense; isolate the Tenda CH22 router from critical internal resources. Implement Web Application Firewall (WAF) rules to block requests containing path traversal sequences (e.g., '../'). Monitor router logs for suspicious activity, particularly attempts to access unusual file paths. Consider replacing the affected router with a patched alternative if feasible. Verify mitigation effectiveness by attempting to access restricted files via a web browser after implementing WAF rules.