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.

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

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.

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

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