What is CVE-2026-1633?

CVE-2026-1633 is a critical-severity vulnerability in Synectix Lan 232 Trio, classified under Missing Authentication for Critical Function. CVSS score: 10.0/10. Published 2026-02-04.

How severe is CVE-2026-1633?

Critical severity. CVSS v3 base score is 10.0 out of 10.

Auth bypass in Synectix Lan 232 Trio

CVE-2026-1633

The Synectix LAN 232 TRIO 3-Port serial to ethernet adapter exposes its web management interface without requiring authentication, allowing unauthenticated users to modify critical device settings or factory reset the device.

Vulnerability class: Broken Authentication

EPSS: 0.005 (42.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 10.0 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H.

Affected products

Synectix Lan 232 Trio — versions All versions

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

ics-cert@hq.dhs.gov
ics-cert@hq.dhs.gov

Frequently asked questions

What is CVE-2026-1633?: CVE-2026-1633 is a critical-severity vulnerability in Synectix Lan 232 Trio, classified under Missing Authentication for Critical Function. CVSS score: 10.0/10. Published 2026-02-04.
How severe is CVE-2026-1633?: Critical severity. CVSS v3 base score is 10.0 out of 10.