What’s Vulnerable › Vulnerabilities

CVE-2008-1255

• Severity: critical (CVSS 10.0 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.9% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2008-03-10 · updated 2026-06-16
• Weakness: CWE-264

Description

The ZyXEL P-660HW series router maintains authentication state by IP address, which allows remote attackers to bypass authentication by establishing a session from a source IP address of a previously authenticated user.

Affected products

• Zyxel P-660Hw: all versions

References

• http://www.gnucitizen.org/projects/router-hacking-challenge/
• http://www.securityfocus.com/archive/1/489009/100/0/threaded
• https://exchange.xforce.ibmcloud.com/vulnerabilities/41114
• http://www.gnucitizen.org/projects/router-hacking-challenge/
• http://www.securityfocus.com/archive/1/489009/100/0/threaded
• https://exchange.xforce.ibmcloud.com/vulnerabilities/41114

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