CVE-2026-34121

8.8 HIGH
Published: April 02, 2026 Modified: April 06, 2026
View on NVD

Description

An authentication bypass vulnerability within the HTTP handling of the DS configuration service in TP-Link Tapo C520WS v2.6 was identified, due to inconsistent parsing and authorization logic in JSON requests during authentication check. An unauthenticated attacker can append an authentication-exempt action to a request containing privileged DS do actions, bypassing authorization checks. Successful exploitation allows unauthenticated execution of restricted configuration actions, which may result in unauthorized modification of device state.

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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:H/I:H/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
8.8 / 10.0
EPSS (Exploit Probability)
0.1%
25th percentile
Exploitation Status
Not in CISA KEV

Weaknesses (CWE)

Affected Vendors

tp-link