CVE-2026-6241: TP-Link Systems Inc Tapo c520ws v2

Medium severity, CVSS 6.8. EPSS: 0.3% chance of exploitation in the next 30 days.

An authenticated format string vulnerability is present in the ONVIF AddScopes in Tapo C520WS v2, where user-controlled input is improperly passed to formatting functions without adequate sanitization. An attacker can inject format specifiers into ONVIF scope parameters to manipulate memory handling behavior. Successful exploitation may cause the ONVIF management service to crash, resulting in DoS condition that impacts normal device operation.

Affected products

• TP-Link Systems Inc Tapo c520ws v2: before 1.2.6 Build 260528 (fixed in 1.2.6 Build 260528)

Published 2026-06-06. Last modified 2026-07-23.