Microsoft Windows XP and Windows Server 2003 do not properly handle user logoff, which might allow local users to gain the privileges of a previous system user, possibly related to user profile unload failure. NOTE: it is not clear whether this is an issue in Windows itself, or an interaction with another product. The issue might involve ZoneAlarm not being able to terminate processes when it cannot prompt the user.

Integer overflow in Computer Associates Vet Antivirus library, as used by CA InoculateIT 6.0, eTrust Antivirus r6.0 through 7.1, eTrust Antivirus for the Gateway r7.0 and r7.1, eTrust Secure Content Manager, eTrust Intrusion Detection, BrightStor ARCserve Backup (BAB) r11.1, Vet Antivirus, Zonelabs ZoneAlarm Security Suite, and ZoneAlarm Antivirus, allows remote attackers to gain privileges via a compressed VBA directory with a project name length of -1, which leads to a heap-based buffer overflow.

ZoneAlarm 2.1 through 2.6 and ZoneAlarm Pro 2.4 and 2.6 allows local users to bypass filtering via non-standard TCP packets created with non-Windows protocol adapters.

ZoneAlarm and ZoneAlarm Pro allows a local attacker to cause a denial of service by running a trojan to initialize a ZoneAlarm mutex object which prevents ZoneAlarm from starting.

MailSafe in Zone Labs ZoneAlarm 2.6 and earlier and ZoneAlarm Pro 2.6 and 2.4 does not block prohibited file types with long file names, which allows remote attackers to send potentially dangerous attachments.

ZoneAlarm 2.1.10 and earlier does not filter UDP packets with a source port of 67, which allows remote attackers to bypass the firewall rules.