CVE-2026-34118

6.5 MEDIUM
Published: April 02, 2026 Modified: April 06, 2026
View on NVD

Description

A heap-based buffer overflow vulnerability was identified in TP-Link Tapo 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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0
Vector String
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory
https://www.tp-link.com/en/support/download/tapo-c520ws/#Firmware-Release-Notes
Source: f23511db-6c3e-4e32-a477-6aa17d310630
Release Notes
https://www.tp-link.com/us/support/download/tapo-c520ws/#Firmware-Release-Notes
Source: f23511db-6c3e-4e32-a477-6aa17d310630
Release Notes
https://www.tp-link.com/us/support/faq/5047/
Source: f23511db-6c3e-4e32-a477-6aa17d310630
Vendor Advisory

3 reference(s) from NVD

Quick Stats

CVSS v3 Score
6.5 / 10.0
EPSS (Exploit Probability)
0.0%
6th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

tp-link