Authentication Bypass Vulnerability in Tycon Systems Web Management Interface
CVE-2026-61884

9.3CRITICAL

Key Information:

Vendor

Tycon Systems

Status
Tpdin-monitor-web2
Vendor
CVE Published:
24 July 2026

What is CVE-2026-61884?

The web management interface of Tycon Systems' TPDIN-Monitor-WEB2 lacks proper server-side validation during the login process, enabling unauthenticated remote attackers to circumvent authentication checks. By submitting empty login fields, an attacker can gain unauthorized access to the administrative controls of the device. This unauthorized access enables full control over critical settings such as power relay management, network configuration, and remote access services, potentially resulting in significant disruptions to infrastructure and causing physical damage to equipment.

Affected Version(s)

TPDIN-Monitor-WEB2 2.3.9

References

https://www.tyconsystems.com/contact
https://www.cisa.gov/news-events/ics-advisories/icsa-26-2...
https://github.com/cisagov/CSAF/blob/develop/csaf_files/O...

CVSS V4

Score:
9.3
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

Abdiwelli Guled reported this vulnerability to CISA.
.