CVE-2013-3588: Zyxel P-660h-61

High severity, CVSS 7.8. EPSS: 2.2% chance of exploitation in the next 30 days.

The web management interface on Zyxel P660 devices allows remote attackers to cause a denial of service (reboot) via a flood of TCP SYN packets.

Affected products

• Zyxel P-660h-61: affected versions not specified
• Zyxel P-660h-63: affected versions not specified
• Zyxel P-660h-67: affected versions not specified
• Zyxel P-660h-d1: affected versions not specified
• Zyxel P-660h-d3: affected versions not specified
• Zyxel P-660h-t1: affected versions not specified; version v2 only
• Zyxel P-660h-t3: version v2 only
• Zyxel P-660hw: version _t1 only
• Zyxel P-660hw d1: affected versions not specified; version v2 only
• Zyxel P-660hw d3: affected versions not specified
• Zyxel P-660hw t3: affected versions not specified; version v2 only

Published 2014-04-02. Last modified 2026-06-16.