CVE-2002-1979: WatchGuard Legacy Rssa

High severity, CVSS 7.5. EPSS: 1.5% chance of exploitation in the next 30 days.

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.

Affected products

• WatchGuard Legacy Rssa: up to and including 3.2_sp1
• WatchGuard Soho: up to and including 5.1.6
• WatchGuard Vclass: up to and including 3.2_sp1

Published 2002-12-31. Last modified 2026-06-16.