CVE-2026-39453

HIGHCVSS 8.3

Description

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.

Timeline

Published:October 9th, 2026 3:17 PM

Last modified:October 11th, 2026 5:17 PM

CVSS Scoring

CVSS v3: 8.3 (HIGH)

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H

Weaknesses (CWE)

CWE-617

References & Reports

Advisories, patches, and third-party reports

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-281-01.json
https://www.cisa.gov/news-events/ics-advisories/icsa-26-281-01
https://www.hms-networks.com/
https://www.hms-networks.com/cybersecurity

Source: NIST NVD · Data may lag official sources by up to one minute