An issue was discovered in Trend Micro InterScan Messaging Security (Virtual Appliance)…
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Code execution
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.0 · NVD. Fix status from CNA. Impact type from CWE-78.
Summary
An issue was discovered in Trend Micro InterScan Messaging Security (Virtual Appliance) 9.1-1600. An authenticated user can execute a terminal command in the context of the web server user (which is root). Besides, the default installation of IMSVA comes with default administrator credentials. The saveCert.imss endpoint takes several user inputs and performs blacklisting. After that, it uses them as arguments to a predefined operating-system command without proper sanitization. However, because of an improper blacklisting rule, it's possible to inject arbitrary commands into it.
Why it matters now
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:trendmicro:interscan_messaging_security_virtual_appliance:9.1-1600:*:*:*:*:*:*:* | 9.1-1600 | Vulnerable | Trendmicro |
- cpe:2.3:a:trendmicro:interscan_messaging_security_virtual_appliance:9.1-1600:*:*:*:*:*:*:* Versions 9.1-1600 Vulnerable ·Trendmicro
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2017-6398
- 2026-10-03 Alias added: GHSA-w5hc-4jjm-xx8x
- 2026-10-20 EPSS moved to the 99th percentile and above
- 2026-10-25 EPSS moved to the 95th–99th percentile
- 2026-10-27 EPSS moved to the 99th percentile and above
References
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More Trendmicro Interscan Messaging Security Virtual Appliance vulnerabilities
- TI-2017-08418 Command injection in Trend Micro InterScan Messaging Security Virtual Appliance CVSS 3.0HIGH 8.8
- TI-2017-08419 Command injection in Trend Micro InterScan Messaging Security Virtual Appliance CVSS 3.0HIGH 8.8
- TI-2018-02645 Insufficiently protected credentials in Trend Micro InterScan Messaging Security Virtual… CVSS 3.0HIGH 8.1
- TI-2020-16796 Trend Micro InterScan Messaging Security Virtual Appliance (IMSVA) 9.1 has updated a… CVSS 3.1HIGH 8.8
- TI-2020-16440 Missing authentication in Trend Micro InterScan Messaging Security Virtual Appliance CVSS 3.1MEDIUM 5.5
- TI-2020-16437 Cross-site request forgery in Trend Micro InterScan Messaging Security Virtual Appliance CVSS 3.1HIGH 8.8
Sources
- CVE-2017-6398 · CVE Program
- CVE-2017-6398 · NVD
- FIRST EPSS
- GHSA-w5hc-4jjm-xx8x · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences