CVE-2008-1525: Zyxel Prestige 660

Medium severity, CVSS 5.0. EPSS: 1.2% chance of exploitation in the next 30 days.

The default SNMP configuration on ZyXEL Prestige routers, including P-660 and P-661 models with firmware 3.40(AGD.2) through 3.40(AHQ.3), has a Trusted Host value of 0.0.0.0, which allows remote attackers to send SNMP requests from any source IP address.

Affected products

• Zyxel Prestige 660: version h-d1 only; version h-d3 only
• Zyxel Prestige 661: version hw-d1 only
• Zyxel Zynos: version 3.40 only

Published 2008-03-26. Last modified 2026-06-16.