CVE-2026-39453
highNavigating to a certain URL on the switch’s web server causes the switch to reboot.
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.
CVSS
8.3
8.3 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:H Severity source: NVD CVSS v3.1 (ics-cert@hq.dhs.gov)
Timeline (UTC)
Published: 2026-10-09 15:17
Modified: 2026-10-11 17:17
NVD status: Awaiting Analysis
Last synced 2 days ago
Verified against the source API 2026-10-27 06:58 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
Not reported by the source (unknown — not "none").
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
No vendor advisory or patch reference tagged by NVD. Check the references below.
References
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-281-01.json ics-cert@hq.dhs.gov
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-281-01 ics-cert@hq.dhs.gov
- https://www.hms-networks.com/ ics-cert@hq.dhs.gov
- https://www.hms-networks.com/cybersecurity ics-cert@hq.dhs.gov
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 06:58 UTC · record ↗