CVE-2026-34124: tp-link systems inc. tapo c520ws v2.6 Classic Buffer Overflow

Vulnerability summary

CVE-2026-34124 is a high (CVSS 7.1) Classic Buffer Overflow vulnerability in tp-link systems inc. tapo c520ws v2.6. EPSS estimates a 0.43% chance of exploitation in the next 30 days, higher than 35.9% of scored vulnerabilities.

Timeline

1. 02-04-2026
   PublishedVulnerability first disclosed.
2. 03-04-2026
   Last modifiedVulnerability information updated.

Description

A denial-of-service vulnerability was identified in TP-Link Tapo C520WS v2.6 within the HTTP request path parsing logic. The implementation enforces length restrictions on the raw request path but does not account for path expansion performed during normalization. An attacker on the adjacent network may send a crafted HTTP request to cause buffer overflow and memory corruption, leading to system interruption or device reboot.

• CWE-120Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.