CVE-2026-34121
HighCVSS 8.8Exploitation Probability (EPSS)
Low risk37th percentile - higher than 37% of all known CVEs
Summary
The TP-Link Tapo C520WS v2.6 camera has an authentication bypass vulnerability in the HTTP handling of the DS configuration service. Inconsistent parsing and authorization logic in JSON requests allows an unauthenticated attacker to append an authentication-exempt action to a request containing privileged DS actions, bypassing access controls.
Risk Assessment
An attacker can remotely change the camera configuration without authentication, potentially leading to privacy breaches or device takeover.
Recommendation
Contact the vendor for a firmware update that fixes this vulnerability.
Other vulnerabilities in TP-Link Tapo C520WS
See all- CVE-2026-34124Medium
TP-Link Tapo C520WS v2.6 has a DoS vulnerability in HTTP request path parsing. Failure to account for path expansion during normalization leads to buffer overflow and memory corruption, potentially causing device reboot.
- CVE-2026-34122Medium
In TP-Link Tapo C520WS v2.6, a stack-based buffer overflow vulnerability was identified in a configuration handling component due to insufficient input validation. An attacker can supply an excessively long value for a vulnerable configuration parameter, causing a stack overflow. Successful exploitation leads to a Denial-of-Service (DoS) condition, causing service crash or device reboot.
- CVE-2026-34120Medium
TP-Link Tapo C520WS v2.6 has a heap-based buffer overflow in asynchronous parsing of local video streams. An attacker on the same network can send crafted payloads causing memory corruption and denial of service (DoS).
- CVE-2026-34119Medium
TP-Link Tapo C520WS v2.6 has a heap-based buffer overflow in the HTTP parsing loop when appending segmented request bodies. An attacker on the same network can send crafted payloads causing memory corruption and denial of service (DoS).
Original NVD description (English source)
An authentication bypass vulnerability within the HTTP handling of the DS configuration service in TP-Link Tapo C520WS v2.6 was identified, due to inconsistent parsing and authorization logic in JSON requests during authentication check. An unauthenticated attacker can append an authentication-exempt action to a request containing privileged DS do actions, bypassing authorization checks. Successful exploitation allows unauthenticated execution of restricted configuration actions, which may result in unauthorized modification of device state.