CVE-2008-1527

Severity: high (CVSS 7.5 v2.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 1.4% 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-310

Description

ZyXEL Prestige routers, including P-660, P-661, and P-662 models with firmware 3.40(PE9) and 3.40(AGD.2) through 3.40(AHQ.3), support authentication over HTTP via a hash string in the hiddenPassword field, which allows remote attackers to obtain access via a replay attack.

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

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