A heap-based buffer overflow vulnerability was identified in TP-Link Tapo C520WS v2.6 within the asynchronous parsing of local video stream content due to
insufficient alignment and validation of buffer boundaries when processing streaming inputs.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 | |
| 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 |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 6.5 |
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-2026-34120
Mitre link : CVE-2026-34120
CVE.ORG link : CVE-2026-34120
JSON object : View
Products Affected
tp-link
- tapo_c520ws_firmware
- tapo_c520ws
CWE
CWE-122
Heap-based Buffer Overflow