Public proof of conceptFix available

CVE-2016-4338

A public proof of concept exists; no exploitation attested.

Published2017-01-23
WeaknessCWE-89

Am I affected?

With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.

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.

Timeline

dates in UTC

2017-01-2321:59CVE publishedNVD
2026-10-2319:23EPSS crossed 10 %FIRST EPSS

Observed activity

isMalicious corpus · updated 2026-10-23 21:37 UTC

Indicators tagged with this CVE, per day0 indicators over 7 days

Block these indicators

Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2016-4338?format=txt
CSV export: https://api.ismalicious.com/edl/cve/CVE-2016-4338?format=csv
TAXII collection of exploited CVEs
The EDL and CSV take an API key on the Pro plan.

Versions per branch

NVD

Zabbix

Branch	Affected	Fixed in	Source
2.0	= 2.0.0	no fix published	NVD
2.0	= 2.0.1	no fix published	NVD
2.0	= 2.0.2	no fix published	NVD
2.0	= 2.0.3	no fix published	NVD
2.0	= 2.0.4	no fix published	NVD
2.0	= 2.0.5	no fix published	NVD
2.0	= 2.0.6	no fix published	NVD
2.0	= 2.0.7	no fix published	NVD
2.0	= 2.0.8	no fix published	NVD
2.0	= 2.0.9	no fix published	NVD
2.0	= 2.0.10	no fix published	NVD
2.0	= 2.0.11	no fix published	NVD

as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.

Fix

Advisories and patches

support.zabbix.comPatch · Vendor Advisory
www.zabbix.comVendor Advisory
www.zabbix.comVendor Advisory
www.zabbix.comVendor Advisory

Detection

read 2026-10-23 19:23 UTC

Nuclei template: none so far
Exploit-DB: EDB-39769
Proof-of-concept repositories: none listed

Sources

NVDCVSS 3.08.1read 2026-10-23
NVDCVSS 2.06.8read 2026-10-23
NVDweakness (CWE)CWE-89read 2026-10-23
FIRST EPSSEPSS score25.2 %read 2026-10-23
Exploit-DBdetectionread 2026-10-23

Technical details

CVSS v3 Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
Published: 2017-01-23
Last Modified: 2026-06-17
NVD status: Modified

Frequently asked questions

What is CVE-2016-4338?

Is CVE-2016-4338 actively exploited?

Active exploitation of CVE-2016-4338 has not been confirmed. Its EPSS score was 25.2% on 2026-10-23, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2016-4338?

CVE-2016-4338 has a CVSS v3 base score of 8.1 (HIGH severity), with vector string CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

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