PT-2026-29850 · Tp Link Systems+1 · Tapo C520Ws V2.6+1

Published 2026-04-02 · Updated 2026-04-03 · CVE-2026-34122

NVD

CVSS v3.1

6.5

Medium

Base vector

AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

A stack-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 within a configuration handling component due to insufficient input validation. An attacker can exploit this vulnerability by supplying an excessively long value for a vulnerable configuration parameter, resulting in a stack overflow.

Successful exploitation results in Denial-of-Service (DoS) condition, leading to a service crash or device reboot, impacting availability.

Fix

Stack Overflow

Weakness Enumeration

CWE-121

Related Identifiers

CVE-2026-34122

Affected Products

Tapo C520Ws V2.6

Tapo C520Ws Firmware

References · 7

• https://nvd.nist.gov/vuln/detail/CVE-2026-34122 · Security Note
• https://tp-link.com/us/support/faq/5047 · Vendor Advisory
• https://tp-link.com/us/support/download/tapo-c520ws/#Firmware-Release-Notes · Patch
• https://tp-link.com/en/support/download/tapo-c520ws/#Firmware-Release-Notes · Patch
• https://twitter.com/syedaquib77/status/2040008191413485803 · Twitter Post
• https://twitter.com/syedaquib77/status/2040015449086136453 · Twitter Post
• https://twitter.com/syedaquib77/status/2040038290472989143 · Twitter Post