Authentication Bypass Vulnerability in Synectix LAN 232 TRIO 3-Port Serial to Ethernet Adapter
CVE-2026-1633

10CRITICAL

Key Information:

Vendor

Synectix

Status
Lan 232 Trio
Vendor
CVE Published:
3 February 2026

What is CVE-2026-1633?

The Synectix LAN 232 TRIO 3-Port Serial to Ethernet Adapter presents a significant security risk by exposing its web management interface without any authentication requirements. This vulnerability allows unauthorized users to access and modify critical device configurations, including the potential for a factory reset, thereby jeopardizing the integrity and functionality of the device. Ensuring proper authentication mechanisms are implemented is crucial to safeguarding against this type of vulnerability.

Affected Version(s)

LAN 232 TRIO All versions

References

https://www.cisa.gov/news-events/ics-advisories/icsa-26-0...
https://github.com/cisagov/CSAF/blob/develop/csaf_files/O...

CVSS V4

Score:
10
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Souvik Kandar of MicroSec reported this vulnerability to CISA
.