F-Secure Internet Security 2010 and earlier; Anti-Virus for Microsoft Exchange 9 and earlier, and for MIMEsweeper 5.61 and earlier; Internet Gatekeeper for Windows 6.61 and earlier, and for Linux 4.02 and earlier; Anti-Virus 2010 and earlier; Home Server Security 2009; Protection Service for Consumers 9 and earlier, for Business - Workstation security 9 and earlier, for Business - Server Security 8 and earlier, and for E-mail and Server security 9 and earlier; Mac Protection build 8060 and earlier; Client Security 9 and earlier; and various Anti-Virus products for Windows, Linux, and Citrix; does not properly detect malware in crafted (1) 7Z, (2) GZIP, (3) CAB, or (4) RAR archives, which makes it easier for remote attackers to avoid detection.

Multiple F-Secure anti-virus products for Microsoft Windows and Linux before 20070619 allow remote attackers to bypass scanning via a crafted header in a (1) LHA or (2) RAR archive.

Multiple F-Secure Anti-Virus products and versions for Windows and Linux, including Anti-Virus for Windows Servers 5.52 and earlier, Internet Security 2004, 2005 and 2006, and Anti-Virus for Linux Servers 4.64 and earlier, allow remote attackers to hide arbitrary files and data via malformed (1) RAR and (2) ZIP archives, which are not properly scanned.

Buffer overflow in multiple F-Secure Anti-Virus products and versions for Windows and Linux, including Anti-Virus for Windows Servers 5.52 and earlier, Internet Security 2004, 2005 and 2006, and Anti-Virus for Linux Servers 4.64 and earlier, allows remote attackers to execute arbitrary code via crafted ZIP archives.

Multiple interpretation error in various F-Secure Anti-Virus products, including Workstation 5.43 and earlier, Windows Servers 5.50 and earlier, MIMEsweeper 5.50 and earlier, Anti-Virus for Linux Servers and Gateways 4.61 and earlier, and other products, allows remote attackers to bypass antivirus protection via a compressed file with both local and global headers set to zero, which does not prevent the compressed file from being opened on the target system.

The Content Scanner Server in F-Secure Anti-Virus for Microsoft Exchange 6.21 and earlier, F-Secure Anti-Virus for Microsoft Exchange 6.01 and earlier, and F-Secure Internet Gatekeeper 6.32 and earlier allow remote attackers to cause a denial of service (service crash due to unhandled exception) via a certain malformed packet.