CVE-2026-6240

A stack-based buffer overflow vulnerability exists in Tapo C520WS v2 in the ONVIF DeleteUsers service, due to insufficient boundary checks when handling multiple user deletion parameters. An authenticated attacker can send a crafted malicious request containing an excessive number of identifiers to overflow stack memory. Successful exploitation may result in a service crash or deadlock, leading to DoS affecting device management and monitoring functionality.

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-2026-6240

Mitre link : CVE-2026-6240

CVE.ORG link : CVE-2026-6240

JSON object : View

Products Affected

No product.

CWE

CWE-121

Stack-based Buffer Overflow

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