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CVE-2025-15620 Belden CVE debrief

CVE-2025-15620 is a critical denial-of-service vulnerability in the web interface of HiOS Switch Platform versions 09.1.00 through 09.4.04 and 10.0.00 through 10.3.00. The vulnerability allows remote attackers to reboot the affected device by sending a malicious HTTP GET request to a specific endpoint, causing service disruption and unavailability of the switch.

Vendor
Belden
Product
Hirschmann HiOS Switch Platform
CVSS
CRITICAL 9.2
CISA KEV
Not listed in stored evidence
Original CVE published
2026-04-02
Original CVE updated
2026-06-05
Advisory published
2026-04-02
Advisory updated
2026-06-05

Who should care

Administrators and users of HiOS Switch Platform versions 09.1.00 through 09.4.04 and 10.0.00 through 10.3.00 should be aware of this vulnerability and take necessary actions to mitigate it.

Technical summary

The vulnerability has a CVSS score of 9.2 and is classified as CRITICAL. It can be exploited by sending a crafted HTTP request to the affected device, triggering an uncontrolled reboot condition.

Defensive priority

High

Recommended defensive actions

  • Apply patches or updates provided by the vendor to fix the vulnerability.
  • Restrict access to the web interface of the affected device to authorized personnel only.
  • Monitor the device for suspicious activity and implement additional security measures to prevent exploitation.

Evidence notes

The vulnerability is confirmed by the vendor and has been analyzed by the National Vulnerability Database (NVD).

Official resources

CVE-2025-15620 was published on 2026-04-02T21:16:40.137Z and modified on 2026-06-05T18:06:11.700Z.