CVE-2026-34118

A heap-based buffer overflow vulnerability was identified in TP-Link Tapo C100/C101 v5, C210 v3.6 and C520WS v2.6 in the HTTP POST body parsing logic due to missing validation of remaining buffer capacity after dynamic allocation, due to insufficient boundary validation when handling externally supplied HTTP input.

An attacker

on the same network segment could trigger heap memory corruption conditions by

sending crafted payloads that cause write operations beyond allocated buffer

boundaries.  Successful exploitation

causes a Denial-of-Service (DoS) condition, causing the device’s process to

crash or become unresponsive.