CVE-2026-39453CWE-617

CVE-2026-39453

High · published October 9, 2026

CVSS v3.1
8.3
EPSS
0%
Percentile
20.4
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
8.3 · HIGH
Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H
CVSS v4.0
8.5 · CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:L/SI:H/SA:H
EPSS
0.00289 · 20.4th percentile
Weakness
CWE-617 · Reachable Assertion
Published
2026-10-09T19:17Z
References (4)
https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-281-01.json · [email protected]https://www.cisa.gov/news-events/ics-advisories/icsa-26-281-01 · [email protected]https://www.hms-networks.com/ · [email protected]https://www.hms-networks.com/cybersecurity · [email protected]
EPSS history
Timeline
  • 11 OCT 03:29Z
    EPSS moved — → 0%
    epss
  • 09 OCT 14:42Z
    Red Lion Controls N-Tron 700 Series Reachable Assertion
    cvelistv5
  • 09 OCT 14:42Z
    Red Lion Controls N-Tron 700 Series Reachable Assertion
    cvelistv5