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.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Prestige_660 | Zyxel | h-d1 (including) | h-d1 (including) |
| Prestige_660 | Zyxel | h-d3 (including) | h-d3 (including) |
| Prestige_661 | Zyxel | hw-d1 (including) | hw-d1 (including) |
| Zynos | Zyxel | 3.40-agd.2 (including) | 3.40-agd.2 (including) |
| Zynos | Zyxel | 3.40-agl.3 (including) | 3.40-agl.3 (including) |
| Zynos | Zyxel | 3.40-ahq.0 (including) | 3.40-ahq.0 (including) |
| Zynos | Zyxel | 3.40-ahq.3 (including) | 3.40-ahq.3 (including) |
| Zynos | Zyxel | 3.40-ahz.0 (including) | 3.40-ahz.0 (including) |
| Zynos | Zyxel | 3.40-atm.0 (including) | 3.40-atm.0 (including) |