# CVE-2025-15620: Hirschmann HiOS Switch Platform denial of service in web interface

Source: https://junglewise.ai/threats/cve-2025-15620-hirschmann-hios-switch-platform-denial-of-service-in-web  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-04-02. Updated: 2026-06-05  
License: CC BY 4.0 with a link back

CVE-2025-15620 · Severity: high · CVSS 8.6 · Published 2026-04-02

The Hirschmann HiOS Switch Platform, used for industrial networking, contains a vulnerability in its web management interface. An attacker can remotely force the switch to reboot by sending a specifically crafted web request. This results in a denial-of-service condition, disrupting network connectivity and potentially impacting industrial operations that rely on the switch.

Vendors: [Hirschmann](https://junglewise.ai/threats/vendors/hirschmann).

## Quick answers

**Is CVE-2025-15620 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2025-15620 being exploited in the wild.

**How severe is CVE-2025-15620?** High severity, with a CVSS score of 8.6, published 2 April 2026.

**Which products and versions are affected?** Hirschmann HiOS 09.1.00 through 09.4.04, 10.0.00 through 10.3.00.

**Is there a fix for CVE-2025-15620?** No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

**How is CVE-2025-15620 attacked?** It is attacked over the network, in a network appliance.

**Am I affected by CVE-2025-15620?** Check whether you run Hirschmann HiOS 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

A denial-of-service (DoS) vulnerability exists in the web interface of Hirschmann HiOS Switch Platform due to missing authentication for a critical function (CWE-306). A remote, unauthenticated attacker can exploit this by sending a crafted HTTP GET request to a specific endpoint. Successful exploitation triggers an uncontrolled reboot of the device, leading to service unavailability. The vulnerability affects versions 09.1.00 through 09.4.04 and 10.0.00 through 10.3.00; it is addressed in versions 09.4.05 and 10.3.01.

## Affected products

- Hirschmann HiOS Switch Platform 09.1.00 through 09.4.04, 10.0.00 through 10.3.00

## Timeline

- 2026-04-02: disclosed
- 2026-04-02: advisory

## References

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

## Related threats

- [Hirschmann HiOS denial of service in EtherNet/IP stack](https://junglewise.ai/threats/cve-2020-37216-hirschmann-hios-denial-of-service-in-ethernet-ip-stack)