PT-2026-47078 · Tp Link Systems · Tapo C520Ws V2

Published 2026-06-05 · Updated 2026-06-06 · CVE-2026-6241

Mitre

CVSS v4.0

6.8

Medium

Base vector

AV:A/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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.

Fix

Use of Externally-Controlled Format String

Weakness Enumeration

CWE-134

Related Identifiers

CVE-2026-6241

Affected Products

Tapo C520Ws V2

References · 4

• https://nvd.nist.gov/vuln/detail/CVE-2026-6241 · Security Note
• https://tp-link.com/us/support/download/tapo-c520ws/#Firmware-Release-Notes · Patch
• https://tp-link.com/en/support/download/tapo-c520ws/#Firmware-Release-Notes · Patch
• https://tp-link.com/us/support/faq/5120 · Vendor Advisory