Vulnerability in Belden Hirschmann Hios Switch Platform
CVE-2026-89025
Hirschmann HiOS Switch Platform devices contain a denial-of-service vulnerability in the integrated web server due to missing validation of HTTP(S) content. A remote unauthenticated attacker can send a specially crafted HTTP(S) request to a specific endpoint that is processed incorrectly, causing the device to perform an unintended reboot and resulting in a temporary denial-of-service condition. This vulnerability has been addressed in versions 07.1.12, 08.7.10, 09.0.13, 09.3.03, 10.3.08, and 10.5.00.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.008 (55.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 56th percentile — 55.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.008 · newest: 0.008 · change: 0.000
Affected products
- Belden Hirschmann Hios Switch Platform — versions 10.4.00, 10.5.00
Weakness classification (CWE)
References
- assets.belden.com/asset/2ba884e3-c0c9-40f6-aa22-a9e852b20af4/PSIRT-6_HTTPS_Vuln… (vendor-advisory, patch)
- www.vulncheck.com/advisories/hirschmann-hios-switch-platform-dos-via-malformed-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-89025?
- CVE-2026-89025 is a high-severity vulnerability in Belden Hirschmann Hios Switch Platform, classified under Improper Handling of Exceptional Conditions. CVSS score: 7.5/10. Published 2026-09-15.
- How severe is CVE-2026-89025?
- High severity. CVSS v3 base score is 7.5 out of 10.