CVE-2025-15620: Belden Hirschmann HiOS Switch Platform

HiOS Switch Platform Denial-of-Service via Web Interface

CVSS 9.2 CriticalCriticalEPSS 0.0052 · 44th percentile

Critical, because:

CVSS score 9.2: 9.0 or more.

Published by the CVE Program (CNA: VulnCheck) at 2 Apr 2026, 20:28 UTC. agentprime has not analysed this yet, so whether it affects any app is not known. This CVE names a vendor and product rather than a package, so the lockfile check doesn’t match it.

Affected products, as the CNA wrote them
Vendor	Product	Versions
Belden	Hirschmann HiOS Switch Platform	affected 09.1.00 to before 09.4.05 custom affected 10.0.00 to before 10.3.01 custom Other versions: unaffected

Identifiers

CVE-2025-15620

CNA

VulnCheck

Weakness (CWE)

CWE-306

Not analysed yet

We haven’t published our own analysis of this CVE. If a person reviews it, this page will say what’s affected and what has to be true for it to matter.

Severity and exploitation

Score	Rating	CVSS	Vector	Source
8.6	High	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H	CNA (VulnCheck)
9.2	Critical	4.0	CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H	CNA (VulnCheck)Used for this record

CISA KEV Not listed.
EPSS 0.0052, the 44th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

This record came from the full history of the CVE Program, published 2 Apr 2026. New records show when each source confirmed them.

Sources

References from the CNA

assets.belden.com/m/702a656e81736b04/original/PSIRT-2_Web_Interface_HiOS.pdf vendor-advisory
www.vulncheck.com/advisories/hios-switch-platform-denial-of-service-via-web-interface third-party-advisory

Facts on this page come from the CVE List as the CNA published them, with CVSS from the sources named above, CISA KEV and FIRST EPSS. Vendors, products and versions are shown as the CNA wrote them. We don’t reproduce the CVE’s description.