CVE-2016-4338

HIGHNVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2022-05-14. NVD baseline CVSS 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 21%CVSS: 8.1Exploit: Elevated riskExposed: 0

A fix is available — apply it.

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.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
57(Track)
EG Risk 57/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity81% × 45%
Exploitation40% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
21%
EPSS %ILE
98%
KEV
Not listed

Published

January 23, 2017

Last Modified

June 17, 2026

Advisory Details (9)

Auto-updated Sep 9, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic

8 What's new in Zabbix 3.0.3

https://www.zabbix.com/documentation/3.0/manual/introduction/whatsnew303#miscellaneous_improvements
generic

18 What's new in Zabbix 2.2.13

https://www.zabbix.com/documentation/2.2/manual/introduction/whatsnew2213#miscellaneous_improvements
generic

Frontend improvements

https://www.zabbix.com/documentation/2.0/manual/introduction/whatsnew2018#miscellaneous_improvements
generic🟡 PoC Available

Zabbix Agent 3.0.1 - 'mysql.size' Shell Command Injection - Linux local Exploit

https://www.exploit-db.com/exploits/39769/
generic

Loading...

https://support.zabbix.com/browse/ZBX-10741
generic

Zabbix: Multiple vulnerabilities (GLSA 201612-42) — Gentoo security

https://security.gentoo.org/glsa/201612-42
generic

CVE-2016-4338 - PSIRT.COM

http://www.securityfocus.com/bid/89631
generic🟡 PoC Available

Full Disclosure: CVE-2016-4338: Zabbix Agent 3.0.1 mysql.size shell command injection

http://seclists.org/fulldisclosure/2016/May/9
generic

Locked Out | Packet Storm

http://packetstormsecurity.com/files/136898/Zabbix-Agent-3.0.1-mysql.size-Shell-Command-Injection.html

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuzabbix-agent (1:2.4.7+dfsg-2ubuntu2.1+esm3) @ xenial2026-05-22ubuntu

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(4 across 4 ecosystems)
Debian:11(1)
PackageVulnerable rangeFixed inDependents
zabbix—1:3.0.3+dfsg-1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
zabbix—1:3.0.3+dfsg-1—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
zabbix—1:3.0.3+dfsg-1—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
zabbix—1:3.0.3+dfsg-1—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

All Vendor Advisories

(1)

Every vendor that published an advisory referencing this CVE — pulled from our cve_vendor_advisories aggregation. Click any row for the vendor's original advisory page.

Data Freshness Timeline

(refreshed 5× in last 7d / 16× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

Showing the most recent 100 of 136 total refreshes for this CVE.

  1. 2026-09-24 13:59 UTCEPSS rescore
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Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 Exploit-DB entry). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Exploit-DBEDB-39769
    First seen May 4, 2016

    Zabbix Agent 3.0.1 - 'mysql.size' Shell Command Injection

    Open source ↗

Related CVEs(same product + same vendor + same CWE)

Frequently asked(5)

What is CVE-2016-4338?
CVE-2016-4338 is a high vulnerability published on January 23, 2017. 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…
When was CVE-2016-4338 disclosed?
CVE-2016-4338 was first published in the National Vulnerability Database on January 23, 2017, with the most recent update on June 17, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2016-4338 actively exploited?
CVE-2016-4338 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 21% probability of exploitation in the next 30 days, which ranks it in the top 2.5% of all scored CVEs.
What is the CVSS score of CVE-2016-4338?
CVE-2016-4338 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2016-4338?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2016-4338, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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