There is an NVIDIA Solaris Driver web forum. You can access it by going to http://forums.developer.nvidia.com and following the "Solaris" link in the “GPU Unix Graphics” section. This is the preferable tool for seeking help; users can post questions, answer other users' questions, and search the archives of previous postings.
If all else fails, you can contact Oracle for support at http://support.oracle.com, or your local service provider.
To report a potential security vulnerability in any NVIDIA product, please use either:
this web form: Security Vulnerability Submission Form, or
send email to: firstname.lastname@example.org
If reporting a potential vulnerability via email, please encrypt it using NVIDIA's public PGP key (see PGP Key page) and include the following information:
Product/Driver name and version/branch that contains the vulnerability
Type of vulnerability (code execution, denial of service, buffer overflow, etc.)
Instructions to reproduce the vulnerability
Proof-of-concept or exploit code
Potential impact of the vulnerability, including how an attacker could exploit the vulnerability