What is CVE-2013-3738?

CVE-2013-3738 is a critical-severity vulnerability in Zabbix, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2020-02-17.

How severe is CVE-2013-3738?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2013-3738 known to be exploited?

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

Improper input validation in Zabbix

CVE-2013-3738

A File Inclusion vulnerability exists in Zabbix 2.0.6 due to inadequate sanitization of request strings in CGI scripts, which could let a remote malicious user execute arbitrary code.

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

Published 2020-02-17 · last modified 2026-06-16.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.031 (87.4th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 87th percentile — 87.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.031 · newest: 0.031 · change: 0.000

Affected products

Zabbix — versions 2.0.6

Weakness classification (CWE)

CWE-20 — Improper Input Validation

Public proof-of-concept exploits

References

support.zabbix.com/browse/ZBX-6652 (Exploit, Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2013-3738?: CVE-2013-3738 is a critical-severity vulnerability in Zabbix, classified under Improper Input Validation. CVSS score: 9.8/10. Published 2020-02-17.
How severe is CVE-2013-3738?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2013-3738 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.