Symantec has revealed the presence of critical vulnerabilities in Norton AntiVirus 2006, Norton Internet Security 2006, Norton Internet Security – Anti Spyware Edition 2005 and Norton System Works 2006, which can be exploited by an attacker to gain control of a Windows PC.

According to Secunia, these bugs allow code to be injected onto a computer and executed with the user’s privileges. Visiting a crafted website is sufficient to become infected with malware via this vulnerability.

Symantec has released updates to fix the vulnerabilities.