An authentication bypass vulnerability within the HTTP handling of the DS configuration service in TP-Link Tapo C520WS v2.6 was identified, due to inconsistent parsing and authorization logic in JSON requests during authentication check. An unauthenticated attacker can append an authentication-exempt action to a request containing privileged DS do actions, bypassing authorization checks. Successful exploitation allows unauthenticated execution of restricted configuration actions, which may result in unauthorized modification of device state.

An authentication logic vulnerability in multiple TP-Link range extenders allows an unauthenticated attacker on an adjacent network to manipulate a login parameter and reset the administrator password due to insufficient validation. Successful exploitation allows an attacker to obtain full administrative control of the affected device, potentially impacting on confidentiality, integrity, and availability.

The HTTPS service on Tapo C200 V3 exposes a connectAP interface without proper authentication. An unauthenticated attacker on the same local network segment can exploit this to modify the device’s Wi-Fi configuration, resulting in loss of connectivity and denial-of-service (DoS).

The TP-Link KP303 Smartplug can be issued unauthenticated protocol commands that may cause unintended power-off condition and potential information leak. This issue affects TP-Link KP303 (US) Smartplug: before 1.1.0.

An unauthenticated OS command injection vulnerability exists in VIGI NVR1104H-4P V1 and VIGI NVR2016H-16MP V2.This issue affects VIGI NVR1104H-4P V1: before 1.1.5 Build 250518; VIGI NVR2016H-16MP V2: before 1.3.1 Build 250407.

A stack-based buffer overflow vulnerability was identified in the ONVIF SOAP XML Parser in Tapo C200 v3 and C520WS v2.6. When processing XML tags with namespace prefixes, the parser fails to validate the prefix length before copying it to a fixed-size stack buffer. It allowed a crafted SOAP request with an oversized namespace prefix to cause memory corruption in stack. An unauthenticated attacker on the same local network may exploit this flaw to enable remote code execution with elevated privileges, leading to full compromise of the device.

Improper authentication vulnerability in TP-Link WA850RE (httpd modules) allows unauthenticated attackers to download the configuration file.This issue affects: ≤ WA850RE V2_160527, ≤ WA850RE V3_160922.