CVE-2026-6239

A stack‑based buffer overflow vulnerability exists in Tapo C520WS v2 in the ONVIF CreateUsers service, where the device fails to properly validate the number of XML user nodes during request processing. An authenticated attacker can send a specially crafted ONVIF request containing an excessive number of user entries to trigger memory corruption. Successful exploitation may cause the ONVIF management service to terminate unexpectedly, resulting in a denial‑of‑service (DoS) condition that disrupts device configuration and management functions.

CVSS

No CVSS.

References

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

Configurations

No configuration.

History

06 Jun 2026, 00:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-06 00:16

Updated : 2026-06-08 15:01

NVD link : CVE-2026-6239

Mitre link : CVE-2026-6239

CVE.ORG link : CVE-2026-6239

JSON object : View

Products Affected

No product.

CWE

CWE-121

Stack-based Buffer Overflow

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