---
id: CVE-2026-39453
title: >-
  Navigating to a certain URL on the switch’s web server causes the switch to
  reboot
summary: >-
  Navigating to a certain URL on the switch’s web server causes the switch to
  reboot. This can be automated using a tool like curl to create DoS conditions
  where the switch constantly reboots.
severity: high
cvss: 8.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H'
cwe:
  - CWE-617
published: '2026-10-09'
updated: '2026-10-09'
sourceUpdated: '2026-10-09T17:29:33.410'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-39453'
references:
  - url: >-
      https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-281-01.json
    label: ics-cert@hq.dhs.gov
  - url: 'https://www.cisa.gov/news-events/ics-advisories/icsa-26-281-01'
    label: ics-cert@hq.dhs.gov
  - url: 'https://www.hms-networks.com/'
    label: ics-cert@hq.dhs.gov
  - url: 'https://www.hms-networks.com/cybersecurity'
    label: ics-cert@hq.dhs.gov
tags:
  - nvd
ingestedAt: '2026-10-09T16:02:33.389Z'
---

## Overview

Navigating to a certain URL on the switch’s web server causes the switch to reboot. This can be automated using a tool like curl to create DoS conditions where the switch constantly reboots.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.