> CVE-2026-34118: TP-Link HTTP POST body heap buffer overflow

An attacker sending a malformed HTTP POST request over LAN to a TP-Link Smart camera device can trigger the vulnerability described here. This report describes a heap buffer overflow, which leads to remote code execution. The vulnerability we are disclosing in this advisory affected a wide range of TP-Link devices, including TAPO Smart Cameras. A TP-Link Security Advisory released in April 2026 contains this vulnerability as CVE-2026-34118. Vulnerability Details In the HTTP Server implementation of TAPO devices, the http_recv_block function (within the main binary) is used to retrieve HTTP packets from the network into memory. It accepts a pointer to a buffer and the size of said buffer as parameters, and copies the HTTP content into this buffer.