---
title: "CVE-2026-89025: Hirschmann HiOS Switch Platform - Denial of Service"
description: "Hirschmann HiOS Switch Platform contains a denial-of-service vulnerability caused by missing validation of HTTP(S) content in the integrated web server, letting remote unauthenticated attackers cause device reboot, exploit requires sending crafted HTTP(S) request."
url: https://panop.io/threat-heartbeat/CVE-2026-89025/
---

# CVE-2026-89025 Hirschmann HiOS Switch Platform - Denial of Service

Hirschmann HiOS Switch Platform contains a denial-of-service vulnerability caused by missing validation of HTTP(S) content in the integrated web server, letting remote unauthenticated attackers cause device reboot, exploit requires sending crafted HTTP(S) request.

CVSS base score 7.5 /10

High

CISA KEV

Not listed

Public exploit

None known

Authentication

Not required

EPSS

0.77% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-89025)

## Details

Type

Denial of Service

Impact

Denial Of Service

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Published

15 September 2026

Updated

15 October 2026

Weakness

[CWE-755](https://cwe.mitre.org/data/definitions/755.html)

## Vendor fix

Update to versions 07.1.12, 08.7.10, 09.0.13, 09.3.03, 10.3.08, 10.5.00 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-89025](https://nvd.nist.gov/vuln/detail/CVE-2026-89025)
- [https://assets.belden.com/asset/2ba884e3-c0c9-40f6-aa22-a9e852b20af4/PSIRT-6\_HTTPS\_Vulnerability\_HiOS.pdf](https://assets.belden.com/asset/2ba884e3-c0c9-40f6-aa22-a9e852b20af4/PSIRT-6_HTTPS_Vulnerability_HiOS.pdf)
- [https://www.vulncheck.com/advisories/hirschmann-hios-switch-platform-dos-via-malformed-http-request](https://www.vulncheck.com/advisories/hirschmann-hios-switch-platform-dos-via-malformed-http-request)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

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