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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…
High8.1EPSS 6.1%
- Published
- Updated
- Reserved
- Assigned by
- trendmicro
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.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| NVDNVD · Modified | 3.0 | High8.1 | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
- EPSS (exploitation in 30 days)
- 6.1% · top 6.6% of all CVEs (4 Nov 2026)
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The list uses the assigner's score when there is one, then CISA's, then NVD's: High 8.1.
Weakness
- OTHER - Unvalidated Update
- CWE-295 (opens in a new tab)All about CWE-295 and its CVEs
Affected products
Trend Micro · Trend Micro Email Encryption Gateway
- affected 5.5
References (3)
- 44166 (opens in a new tab)exploitx_refsource_EXPLOIT-DBx_transferred
- https://success.trendmicro.com/solution/1119349 (opens in a new tab)x_refsource_CONFIRMx_transferred
- https://www.coresecurity.com/advisories/trend-micro-email-encryption-gateway-multiple-vulnerabilities (opens in a new tab)x_refsource_MISCx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisories (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://trackcve.app/cve/CVE-2018-6221)Record last updated .