What is CVE-2018-6225?

CVE-2018-6225 is a medium-severity vulnerability in Trend Micro Email Encryption Gateway, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 4.3/10. Published 2018-03-15.

How severe is CVE-2018-6225?

Medium severity. CVSS v3 base score is 4.3 out of 10.

XXE in Trend Micro Email Encryption Gateway

CVE-2018-6225

An XML external entity injection (XXE) vulnerability in Trend Micro Email Encryption Gateway 5.5 could allow an authenticated user to expose a normally protected configuration script.

Vulnerability class: XXE (XML External Entity)

Published 2018-03-15 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.039 (89.9th percentile), scored 2026-09-29.

Low probability of exploitation in the next 30 days, but still tracked. 90th percentile — 89.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.039 · newest: 0.039 · change: 0.000

Affected products

Trend Micro Email Encryption Gateway — versions 5.5
Trendmicro Email Encryption Gateway — versions 5.5

Weakness classification (CWE)

CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

References

www.exploit-db.com/exploits/44166/ (Exploit, VDB Entry, Third Party Advisory, exploit)
success.trendmicro.com/solution/1119349 (Patch, Vendor Advisory)
www.coresecurity.com/advisories/trend-micro-email-encryption-gateway-multiple-v… (Technical Description, Exploit, Third Party Advisory)

Frequently asked questions

What is CVE-2018-6225?: CVE-2018-6225 is a medium-severity vulnerability in Trend Micro Email Encryption Gateway, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 4.3/10. Published 2018-03-15.
How severe is CVE-2018-6225?: Medium severity. CVSS v3 base score is 4.3 out of 10.