The TK_set_deviceModel_req_handle function in the cloud communication component in Guardzilla GZ621W devices with firmware 0.5.1.4 has a Buffer Overflow.
https://labs.bitdefender.com/2018/12/iot-report-major-flaws-in-guardzilla-cameras-allow-remote-hijack-of-the-security-device/
Source: Mitre, NVD
Published: 2018-12-31
Updated: 2026-06-17
Base Score: 6.8
Vector: CVSS2#AV:N/AC:M/Au:N/C:P/I:P/A:P
Severity: Medium
Base Score: 8.1
Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Severity: High
EPSS: 0.00459