The klif.sys driver in Kaspersky Labs Anti-Virus 5.0.227, 5.0.228, and 5.0.335 on Windows 2000 allows local users to gain privileges by modifying certain critical code addresses that are later accessed by privileged programs.

Sophos Anti-Virus 3.93 does not check downloaded files for viruses when they have only been written, which creates a race condition and may allow remote attackers to bypass virus protection if the file is executed before the antivirus starts on system reboot.

Heap-based buffer overflow in multiple F-Secure Anti-Virus and Internet Security products allows remote attackers to execute arbitrary code via a crafted ARJ archive.

Unknown vulnerability in HTTP Anti Virus Proxy (HAVP) before 0.51 prevents viruses from being properly detected in certain files such as (1) .CAB or (2) .ZIP files.

Sophos Anti-Virus before 3.87.0, and Sophos Anti-Virus for Windows 95, 98, and Me before 3.88.0, 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 a target system.

Kaspersky 3.x to 4.x 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 a target system.

Computer Associates (CA) InoculateIT 6.0, eTrust Antivirus r6.0 through r7.1, eTrust Antivirus for the Gateway r7.0 and r7.1, eTrust Secure Content Manager, eTrust Intrusion Detection, EZ-Armor 2.0 through 2.4, and EZ-Antivirus 6.1 through 6.3 allow 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 a target system.

RAV antivirus 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 a target system.

McAfee Anti-Virus Engine DATS drivers before 4398 released on Oct 13th 2004 and DATS Driver before 4397 October 6th 2004 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 a target system.

Eset Anti-Virus before 1.020 (16th September 2004) 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 a target system.