CVE-2008-1524

Severity: high (CVSS 7.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2008-03-26 · updated 2026-06-16
Weakness: CWE-16

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.

Affected products

Zyxel Prestige 660: h-d1, h-d3
Zyxel Prestige 661: hw-d1
Zyxel Zynos: 3.40-agd.2, 3.40-agl.3, 3.40-ahq.0, 3.40-ahq.3, 3.40-ahz.0, 3.40-atm.0

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

Get alerted when CVE-2008-1524 or the next vulnerability affects your stack