A critical privilege management flaw in Tenda CP3 version 27.5.57.101 potentially allows remote attackers to gain unauthorized elevated control over the device.

The vulnerability exists in the CRedirServer::SetRedirectEnable function within Functions/Redirect.cpp. It stems from improper privilege management, which can be exploited by an authenticated attacker with high privileges to perform unauthorized actions.

With a CVSS score of 9.1, this vulnerability represents a critical risk to device integrity. An attacker who successfully exploits this flaw can bypass intended access controls, leading to total system compromise, unauthorized data access, and the potential for full control over the router functionality.

Immediate Action: Contact Tenda support or monitor the official Tenda website for firmware updates addressing this vulnerability.

Proactive Monitoring: Audit device configurations for unauthorized changes and monitor management interface logs for abnormal activity.

Compensating Controls: Restrict access to the device management interface to known, trusted IP addresses using network-level ACLs.

Public Exploit Available: Unknown; no confirmed public exploit or weaponized module is currently identified.

Due to the critical severity of this vulnerability, administrators should isolate the Tenda CP3 devices from public-facing networks until a firmware patch is available. Constant vigilance through log monitoring is necessary to detect any attempts to leverage this privilege management flaw.