WatchGuard SOHO products running firmware 5.1.6 and earlier, and Vclass/RSSA using 3.2 SP1 and earlier, allows remote attackers to bypass firewall rules by sending a PASV command string as the argument of another command to an FTP server, which generates a response that contains the string, causing IPFilter to treat the response as if it were a legitimate PASV command from the server.
Dynamic VPN Configuration Protocol service (DVCP) in Watchguard Firebox firmware 5.x.x allows remote attackers to cause a denial of service (crash) via a malformed packet containing tab characters to TCP port 4110.
Watchguard SOHO firewall before 5.0.35 allows remote attackers to cause a denial of service (crash and reboot) when SOHO forwards a packet with bad IP options.
Watchguard SOHO firewall 5.0.35 unpredictably disables certain IP restrictions for customized services that were set before the administrator upgrades to 5.0.35, which could allow remote attackers to bypass the intended access control rules.
SMTP proxy in WatchGuard Firebox (2500 and 4500) 4.5 and 4.6 allows a remote attacker to bypass firewall filtering via a base64 MIME encoded email attachment whose boundary name ends in two dashes.
Watchguard Firebox II prior to 4.6 allows a remote attacker to create a denial of service in the kernel via a large stream (>10,000) of malformed ICMP or TCP packets.
Watchguard Firebox II firewall allows users with read-only access to gain read-write access, and administrative privileges, by accessing a file that contains hashed passphrases, and using the hashes during authentication.