CVE-2026-1633: Synectix LAN 232 TRIO Missing Authentication for Critical Function

Severity: critical (CVSS 10.0 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.6% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-02-04 · updated 2026-06-17
Weakness: CWE-306

Description

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.

Affected products

Synectix LAN 232 TRIO: all versions

References

https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-034-04.json
https://www.cisa.gov/news-events/ics-advisories/icsa-26-034-04

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