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CVE-2016-4338Zabbix SQL Injection

The mysql user parameter configuration script (userparameter_mysql.conf) in the agent in Zabbix before 2.0.18, 2.2.x before 2.2.13, and 3.0.x before 3.0.3, when used with a shell other than bash, allows context-dependent attackers to execute arbitrary code or SQL commands via…

Published Jan 23, 2017 · Updated Aug 4, 2026 · Also known as DEBIAN-CVE-2016-4338, UBUNTU-CVE-2016-4338

Key Facts

Patch immediately
  • CVE-2016-4338 is a high-severity vulnerability (CVSS 8.1 v3.1) affecting Zabbix.
  • It is not listed in any known-exploited vulnerabilities catalog. Public exploit code is available.
  • EPSS estimates a 21% probability of exploitation in the next 30 days.
  • Fixed versions are available, including Zabbix 1:2.2.2+dfsg-1ubuntu1+esm1, Zabbix 1:2.2.2+dfsg-1ubuntu1+esm4, Zabbix 1:2.4.7+dfsg-2ubuntu2.1+esm3.
  • Brandefense priority: patch immediately, because public exploit code exists for a high-severity flaw.

Scores

CVSS v3.1

8.1

CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS (30-day exploit likelihood)

21%

Higher than 97.5% of all scored CVEs

Exploit maturity

Proof of concept

ATLAS score

48/100

Publication score, see How it works

Exploitation Verdict

KEV listed

Not listed

Federal due date

None

No federal due date

Ransomware use

Not reported

Attributed actors

None named

Exploit & Defence Guidance

Exploit maturity

Proof of concept

Public exploit code

3

Proof-of-concept links

In-the-wild evidence

1

Reports of active use

Description

The mysql user parameter configuration script (userparameter_mysql.conf) in the agent in Zabbix before 2.0.18, 2.2.x before 2.2.13, and 3.0.x before 3.0.3, when used with a shell other than bash, allows context-dependent attackers to execute arbitrary code or SQL commands via the mysql.size parameter.

Affected Products

48 affected entries in total
ProductAffected versionsFixed in
ZabbixZabbix2.0.0, 2.0.1, 2.0.10, 2.0.11, 2.0.12, 2.0.13, 2.0.14, 2.0.151:3.0.3+dfsg-1

Patched Releases

Zabbix

1:2.2.2+dfsg-1ubuntu1+esm1, 1:2.2.2+dfsg-1ubuntu1+esm4, 1:2.4.7+dfsg-2ubuntu2.1+esm3, 1:3.0.12+dfsg-1ubuntu0.1~esm3, 1:3.0.3+dfsg-1, 1:4.0.17+dfsg-1ubuntu0.1~esm1

Timeline

  1. Publicly disclosed

    Jan 23, 2017

  2. Last updated

    Aug 4, 2026

Weakness Type

  • CWE-89 Improper Neutralization of Special Elements used in an SQL Command ('SQL Injection')

References

15 more references in the full CVE brief

FAQ

Common Questions.

Is CVE-2016-4338 On Your Attack Surface?

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Figures as of Oct 19, 2026. Compiled by Brandefense technologies from public vulnerability catalogs; scoring as described in How it works.

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