Crestron Electronics DM-TXRX-100-STR devices with firmware before 1.3039.00040 use a hardcoded 0xb9eed4d955a59eb3 X.509 certificate from an OpenSSL Test Certification Authority, which makes it easier for remote attackers to conduct man-in-the-middle attacks against HTTPS sessions by leveraging the certificate's trust relationship.

Crestron Electronics DM-TXRX-100-STR devices with firmware before 1.3039.00040 allow remote attackers to bypass authentication and change settings via a JSON API call.

Crestron Electronics DM-TXRX-100-STR devices with firmware before 1.3039.00040 rely on the client to perform authentication, which allows remote attackers to obtain access by setting the value of objresp.authenabled to 1.

Crestron Electronics DM-TXRX-100-STR devices with firmware before 1.3039.00040 allow remote attackers to bypass authentication via a direct request to a page other than index.html.

Multiple cross-site request forgery (CSRF) vulnerabilities on Crestron Electronics DM-TXRX-100-STR devices with firmware through 1.3039.00040 allow remote attackers to hijack the authentication of arbitrary users.

Crestron Electronics DM-TXRX-100-STR devices with firmware before 1.3039.00040 have a hardcoded password of admin for the admin account, which makes it easier for remote attackers to obtain access via the web management interface.