Description
The SNMP service on ZyXEL Prestige routers, including P-660 and P-661 models with firmware 3.40(AGD.2) through 3.40(AHQ.3), has "public" as its default community for both (1) read and (2) write operations, which allows remote attackers to perform administrative actions via SNMP, as demonstrated by reading the Dynamic DNS service password or inserting an XSS sequence into the system.sysName.0 variable, which is displayed on the System Status page.
Metrics
CVSS 2.0 7.5/10
AV:N/AC:L/Au:N/C:P/I:P/A:PWeakness enumeration
Affected software
| Vendor | Product | Versions |
|---|---|---|
| n/a | n/a | n/a |
References
- http://www.gnucitizen.org/projects/router-hacking-challenge/
- http://www.procheckup.com/Hacking_ZyXEL_Gateways.pdf
- http://www.securityfocus.com/archive/1/489009/100/0/threaded
- http://www.gnucitizen.org/projects/router-hacking-challenge/
- http://www.procheckup.com/Hacking_ZyXEL_Gateways.pdf
- http://www.securityfocus.com/archive/1/489009/100/0/threaded
Timeline
- Published
- Mar 26, 2008
- Last modified
- Jun 16, 2026
- NVD status
- Modified