Hirschmann HiOS Switch Platform DoS via Malformed HTTP Request (CVE-2026-89025) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-89025

Hirschmann HiOS Switch Platform DoS via Malformed HTTP Request

Answer in brief

CVE-2026-89025 records a Unknown severity vulnerability in Hirschmann HiOS Switch Platform DoS via Malformed HTTP Request. The current sources do not mark it as known exploited. The current feed maps Belden/Hirschmann HiOS Switch Platform (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 15, 2026Updated Sep 15, 2026Source checked Sep 16, 2026First seen by HOL Sep 15, 2026Material review Sep 15, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Belden/Hirschmann HiOS Switch Platform (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Belden/Hirschmann HiOS Switch Platformgeneric	07.0.0 \|\| 08.0.0 \|\| 09.0.00 \|\| 09.3.00 \|\| 10.0.0 \|\| 10.4.00 \|\| 10.5.00	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Belden/Hirschmann HiOS Switch Platform.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 15, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 15, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.