Is CVE-2026-89025 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-89025 being exploited in the wild.

How severe is CVE-2026-89025?

High severity, with a CVSS score of 7.5, published 15 September 2026.

Which products and versions are affected?

Hirschmann HiOS Switch Platform 07.0.0 through 07.1.11, 08.0.0 through 08.7.09, 09.0.00 through 09.0.12, 09.3.00 through 09.3.02, 10.0.0 through 10.3.07.

Is there a fix for CVE-2026-89025?

A patch was published on 2026-09-15: Patches released in versions 07.1.12, 08.7.10, 09.0.13, 09.3.03, 10.3.08, and 10.5.00 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-89025 attacked?

It is attacked over the network, in a network appliance.

Am I affected by CVE-2026-89025?

Check whether you run Hirschmann HiOS Switch Platform at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-89025: Hirschmann HiOS Switch Platform denial-of-service in web server

CVE-2026-89025 · Severity: high · CVSS 7.5 · Published 2026-09-15

Hirschmann HiOS switches are managed network devices that route traffic in industrial and enterprise environments. The integrated web server contains an input validation flaw that allows remote attackers to crash the device with a malformed HTTP request, causing temporary network outage until the device reboots and comes back online.

Vendors: Hirschmann.

Quick answers

Is CVE-2026-89025 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-89025 being exploited in the wild.
How severe is CVE-2026-89025?: High severity, with a CVSS score of 7.5, published 15 September 2026.
Which products and versions are affected?: Hirschmann HiOS Switch Platform 07.0.0 through 07.1.11, 08.0.0 through 08.7.09, 09.0.00 through 09.0.12, 09.3.00 through 09.3.02, 10.0.0 through 10.3.07.
Is there a fix for CVE-2026-89025?: A patch was published on 2026-09-15: Patches released in versions 07.1.12, 08.7.10, 09.0.13, 09.3.03, 10.3.08, and 10.5.00 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-89025 attacked?: It is attacked over the network, in a network appliance.
Am I affected by CVE-2026-89025?: Check whether you run Hirschmann HiOS Switch Platform at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is an improper handling of exceptional conditions (CWE-755) in the HiOS web server that fails to validate HTTP(S) request content. A remote, unauthenticated attacker can send a specially crafted HTTP(S) request to a specific endpoint, which is processed incorrectly by the web server, triggering an unintended device reboot. The attack requires only network reachability to the web interface (no authentication or user interaction needed). The impact is temporary denial of service; the device recovers after reboot. Patches are available in versions 07.1.12, 08.7.10, 09.0.13, 09.3.03, 10.3.08, and 10.5.00.

Affected products

Hirschmann HiOS Switch Platform 07.0.0 through 07.1.11, 08.0.0 through 08.7.09, 09.0.00 through 09.0.12, 09.3.00 through 09.3.02, 10.0.0 through 10.3.07

Timeline

2026-09-15: disclosed
2026-09-15: patched: Patches released in versions 07.1.12, 08.7.10, 09.0.13, 09.3.03, 10.3.08, and 10.5.00

References

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