CVE-2026-89025

Hirschmann HiOS Switch Platform DoS via Malformed HTTP Request

HIGH
7.5
CVSS Score
Published: September 15, 2026 at 02:13 PM UTC
Updated: October 1, 2026 at 03:21 PM UTC
2 products affected across 1 vendorHirschmann HiOSHios Switch

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Severity
HIGH7.5
Exploit prediction
EPSS 0.8%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

10.0.0 ≤ v ≤ 10.3.077.0.0 ≤ v ≤ 07.1.118.0.0 ≤ v ≤ 08.7.099.0.00 ≤ v ≤ 9.0.129.3.00 ≤ v ≤ 09.3.0210.4.0010.5.00
10.0.0 ≤ v ≤ 10.3.077.0.0 ≤ v ≤ 07.1.118.0.0 ≤ v ≤ 08.7.099.0.00 ≤ v ≤ 9.0.129.3.00 ≤ v ≤ 09.3.0210.0.010.4.0010.5.007.0.08.0.09.0.009.3.00
Vendor states this is fixed in 10.3.08 (unaffected)
Vendor states this is fixed in 7.1.12 (unaffected)
Vendor states this is fixed in 8.7.10 (unaffected)
Vendor states this is fixed in 9.0.13 (unaffected)
Vendor states this is fixed in 9.3.03 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGHVulnCheck
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusAWAITING ANALYSIS
CWE
CWE-755

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