CVE-2026-34123

HIGH EPSS 4.7%
Published Jun 6, 20263w ago · Modified Jun 17, 20261w ago
7.0 CVSS 4.0
High
Find Similar
Published Jun 6, 2026 3w ago
Last Modified Jun 17, 2026 1w ago

Description

On Tapo C520WS v2, restricted accounts (for example, hub users) are intended to execute only a limited set of low‑sensitivity operations. Due to a logic flaw in the device’s API authorization mechanism, an attacker can craft requests that leverage legitimate “method mapping” behavior to bypass whitelist restrictions, allowing restricted operations to be masked as permitted requests and executed. Successful exploitation may allow an attacker (with access to a restricted account) to execute unauthorized sensitive operations.  Depending on the operation invoked, impact could include device resets, unintended configuration changes, or disruption of normal operation, leading to loss of availability and integrity of the device.

CVSS Details

Base Score
7.0
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:A/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Attack Vector Adjacent
Attack Complexity Low
Privileges Required Low
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
4.7% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 1

CWE-287 Improper Authentication Authentication

References 3

  • tp-link.com https://www.tp-link.com/en/support/download/tapo-c520ws/#Firmware-Release-Notes
  • tp-link.com https://www.tp-link.com/us/support/download/tapo-c520ws/#Firmware-Release-Notes
  • tp-link.com https://www.tp-link.com/us/support/faq/5120/

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.