A heap-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 in the HTTP POST body parsing logic due to missing validation of remaining buffer capacity after dynamic allocation, due to insufficient boundary validation when handling externally supplied HTTP input. An attacker
on the same network segment could trigger heap memory corruption conditions by
sending crafted payloads that cause write operations beyond allocated buffer
boundaries. Successful exploitation
causes a Denial-of-Service (DoS) condition, causing the device’s process to
crash or become unresponsive.
References
| Link | Resource |
|---|---|
| https://www.tp-link.com/en/support/download/tapo-c520ws/#Firmware-Release-Notes | Release Notes |
| https://www.tp-link.com/us/support/download/tapo-c520ws/#Firmware-Release-Notes | Release Notes |
| https://www.tp-link.com/us/support/faq/5047/ | Vendor Advisory |
Configurations
Configuration 1 (hide)
| AND |
|
History
06 Apr 2026, 20:26
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://www.tp-link.com/en/support/download/tapo-c520ws/#Firmware-Release-Notes - Release Notes | |
| References | () https://www.tp-link.com/us/support/download/tapo-c520ws/#Firmware-Release-Notes - Release Notes | |
| References | () https://www.tp-link.com/us/support/faq/5047/ - Vendor Advisory | |
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 6.5 |
| CPE | cpe:2.3:o:tp-link:tapo_c520ws_firmware:*:*:*:*:*:*:*:* cpe:2.3:h:tp-link:tapo_c520ws:2.6:*:*:*:*:*:*:* |
|
| First Time |
Tp-link tapo C520ws Firmware
Tp-link Tp-link tapo C520ws |
02 Apr 2026, 18:16
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-04-02 18:16
Updated : 2026-04-06 20:26
NVD link : CVE-2026-34118
Mitre link : CVE-2026-34118
CVE.ORG link : CVE-2026-34118
JSON object : View
Products Affected
tp-link
- tapo_c520ws_firmware
- tapo_c520ws
CWE
CWE-122
Heap-based Buffer Overflow