Vulnerability in Trend Micro Email Encryption Gateway

CVE-2018-6221

An unvalidated software update vulnerability in Trend Micro Email Encryption Gateway 5.5 could allow a man-in-the-middle attacker to tamper with an update file and inject their own.

Vulnerability class: Improper Certificate Validation

Published · last modified .

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.061 (93.2th percentile), scored .

Low probability of exploitation in the next 30 days, but still tracked. 93rd percentile — 93.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS trend (30 days)EPSS over the last 30 days for CVE-2018-6221: held from 0.061 to 0.061.

EPSS over last 30 days · oldest: 0.061 · newest: 0.061 · change: 0.000

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

Frequently asked questions

What is CVE-2018-6221?
CVE-2018-6221 is a high-severity vulnerability in Trend Micro Email Encryption Gateway, classified under Improper Certificate Validation. CVSS score: 8.1/10. Published 2018-03-15.
How severe is CVE-2018-6221?
High severity. CVSS v3 base score is 8.1 out of 10.
Is CVE-2018-6221 known to be exploited?
1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.