Multiple Symantec AntiVirus products, including Norton AntiVirus 2005 11.0.0, Web Security Web Security 3.0.1.72, Mail Security for SMTP 4.0.5.66, AntiVirus Scan Engine 4.3.7.27, SAV/Filter for Domino NT 3.1.1.87, and Mail Security for Exchange 4.5.4.743, when running on Windows, allows remote attackers to cause a denial of service (component crash) and avoid detection via a crafted RAR file.