What is CVE-2018-20338?

CVE-2018-20338 is a critical-severity vulnerability in Zohocorp Manageengine Opmanager, classified under SQL Injection. CVSS score: 9.8/10. Published 2018-12-21.

How severe is CVE-2018-20338?

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

Is CVE-2018-20338 known to be exploited?

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

SQL Injection in Zohocorp Manageengine Opmanager

CVE-2018-20338

Zoho ManageEngine OpManager 12.3 before build 123239 allows SQL injection in the Alarms section.

Vulnerability class: SQL Injection

Published 2018-12-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.115 (95.9th percentile), scored 2026-09-30.

Moderate probability of exploitation in the next 30 days — watch for active exploitation reports. 96th percentile — 95.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.115 · newest: 0.115 · change: 0.000

Affected products

Zohocorp Manageengine Opmanager — versions 12.3

Weakness classification (CWE)

CWE-89 — SQL Injection

Public proof-of-concept exploits

ARPSyndicate/cve-scores

References

www.manageengine.com/network-monitoring/help/read-me.html (Release Notes, Vendor Advisory)
www.securityfocus.com/bid/106302 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2018-20338?: CVE-2018-20338 is a critical-severity vulnerability in Zohocorp Manageengine Opmanager, classified under SQL Injection. CVSS score: 9.8/10. Published 2018-12-21.
How severe is CVE-2018-20338?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2018-20338 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.