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01 Record

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.

UnratedPUBLISHEDCNA: trendmicro
CNA base scoreUnratedNo CNA CVSS vector
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02 Description

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.

03 Exploitation and scoring

Exploitation
Not assessed. CISA has not published an exploitation assessment for this record, and it is not in the KEV catalog. That is an absence of assessment, not a finding of no risk.
SSVC decision
Not assessed by CISA
EPSS probability
6.09% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 93.0% of scored records. A rank, not a probability.
NVD base score
8.1 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD analysis status
Modified. NVD last modified this record on 2026-06-17.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2018-03-15 19:00Z8 YR AGO
Last updated
2024-08-05 05:54Z2 YR AGO
Reserved
2018-01-25
Assigning CNA
trendmicro
Record state
PUBLISHED
Severity
Not rated by the issuing CNA
CNA CVSS vector
Not published by the issuing CNA
Weaknesses
  • CWE-295Improper Certificate ValidationBase
Data version
5.1
Document digest
45ddb025b651d952b698242e1c2b16b0f133c35f945a3272e75c0178528d0572

05 Affected products

VendorProductVersionsPlatforms
Trend MicroTrend Micro Email Encryption Gateway5.5—

06 References