An improper certificate validation vulnerability exists in AVTECH IP cameras, DVRs, and NVRs due to the use of wget with --no-check-certificate in scripts like SyncCloudAccount.sh and SyncPermit.sh. This exposes HTTPS communications to man-in-the-middle (MITM) attacks.

An unauthenticated command injection vulnerability exists in AVTECH DVR devices via Search.cgi?action=cgi_query. The use of wget without input sanitization allows attackers to inject shell commands through the username or queryb64str parameters, executing commands as root.

An unauthenticated information disclosure vulnerability exists in AVTECH IP cameras, DVRs, and NVRs via Machine.cgi?action=get_capability. Sensitive internal device information such as firmware version, MAC address, and codec support can be accessed without authentication.

A server-side request forgery vulnerability exists in multiple firmware versions of AVTECH DVR devices that exposes the /cgi-bin/nobody/Search.cgi?action=cgi_query endpoint without authentication. An attacker can manipulate the ip, port, and queryb64str parameters to make arbitrary HTTP requests from the DVR to internal or external systems, potentially exposing sensitive data or interacting with internal services.

A cross-site request forgery (CSRF) vulnerability exists in the web interface of AVTECH IP camera, DVR, and NVR devices. An attacker can craft malicious requests that, when executed in the context of an authenticated user’s browser session, allow unauthorized changes to the device configuration without user interaction.