Positive Technologies Research Team has discovered privilege escalation vulnerabilities in VMware products. Buffer overflow vulnerability exists in vmci.sys driver. Local user with administrative privileges can execute arbitrary code with SYSTEM privileges.
You can download this advisory from the following link: https://packetstormsecurity.com/files/download/76394/PT-2008-05.txt
Source: https://packetstormsecurity.com/files/76394/Positive-Technologies-VMware.html