CVE-2005-1680: D-Link DSL-502t

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

D-Link DSL-502T, DSL-504T, DSL-562T, and DSL-G604T, when /cgi-bin/firmwarecfg is executed, allows remote attackers to bypass authentication (1) if their IP address already exists in /var/tmp/fw_ip or (2) if their request is the first, which causes /var/tmp/fw_ip to be created and contain their IP address.

Affected products

• D-Link DSL-502t: any version
• D-Link DSL-504t: any version
• D-Link DSL-562t: any version
• D-Link DSL-g604t: any version

Published 2005-05-20. Last modified 2026-06-16.