CVE-2017-20238 Belden CVE debrief

Who should care

Users of Hirschmann Industrial HiVision versions 06.0.00, 07.0.00, and those who manage or interact with managed devices in industrial settings should assess and mitigate this vulnerability. This includes operators, platform administrators, vulnerability management teams, and security teams responsible for ensuring the security and integrity of industrial control systems.

Technical summary

The vulnerability exists due to improper authorization mechanisms in Hirschmann Industrial HiVision. Specifically, read-only users can bypass access controls to gain write access to managed devices. Exploitation can occur through alternative interfaces such as the web interface or SNMP browser, allowing attackers to modify device configurations. This could lead to unauthorized changes in device settings, potentially disrupting industrial control systems. Affected versions include 06.0.00 and 07.0.00 prior to 06.0.06 and 07.0.01. Users should review and apply patches or updates to Hirschmann Industrial HiVision to version 06.0.06 or 07.0.01, or later.

Defensive priority

High priority should be given to patching or mitigating this vulnerability, especially in industrial control systems where unauthorized access could have significant impacts.

Recommended defensive actions

• Apply patches or updates to Hirschmann Industrial HiVision to version 06.0.06 or 07.0.01, or later.
• Restrict access to managed devices to only necessary personnel.
• Monitor device configurations for unauthorized changes.
• Implement additional security measures such as multi-factor authentication for device management interfaces.
• Review compensating controls for exposed systems while remediation is scheduled and verified.
• Check relevant monitoring, detection, and logs for exposed assets that need extra review.
• Track exceptions, retest remediated assets, and close the item only after evidence is documented.

Evidence notes

The CVE record was published on 2026-04-03T23:17:00.633Z and was last modified on 2026-07-21T07:10:00.117Z. The NVD entry is currently Awaiting Analysis. Official references include a security bulletin from Belden and an advisory from VulnCheck. The vulnerability affects Hirschmann Industrial HiVision versions 06.0.00 and 07.0.00 prior to 06.0.06 and 07.0.01. Read-only users can bypass access controls to gain write access to managed devices through alternative interfaces like the web interface or SNMP browser.

Official resources