What is CVE-2013-3588?

CVE-2013-3588 is a vulnerability in Zyxel P-660h-61, classified under Improper Input Validation. Published 2014-04-02.

Is CVE-2013-3588 known to be exploited?

13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

Improper input validation in Zyxel P-660h-61

CVE-2013-3588

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.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2014-04-02 · last modified 2026-06-16.

CVSS v2 metric

CVSS v2 base score 7.8 (High). Vector: AV:N/AC:L/Au:N/C:N/I:N/A:C. This CVE predates CVSS v3 and has no v3 score from NVD.

EPSS exploit prediction

EPSS: 0.022 (81.7th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 82nd percentile — 81.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.022 · newest: 0.022 · change: 0.000

Affected products

Weakness classification (CWE)

CWE-20 — Improper Input Validation

Public proof-of-concept exploits

References

www.kb.cert.org/vuls/id/893726 (US Government Resource, third-party-advisory)

Frequently asked questions

What is CVE-2013-3588?: CVE-2013-3588 is a vulnerability in Zyxel P-660h-61, classified under Improper Input Validation. Published 2014-04-02.
Is CVE-2013-3588 known to be exploited?: 13 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.