What is CVE-2026-61884?

CVE-2026-61884 is a critical-severity vulnerability in Tycon Systems Tpdin-Monitor-Web2, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-07-24.

How severe is CVE-2026-61884?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Auth bypass in Tycon Systems Tpdin-Monitor-Web2

CVE-2026-61884

The Tycon Systems TPDIN-Monitor-WEB2 ships without HTTP credentials configured, intended for an installer to set them on first use. On firmware 2.4.4 and earlier, a unit left in this unconfigured state serves the web management interface without requiring any login. An attacker with network access to such a unit can reach full device controls, including power relay management, device reboot, remote access service configuration, and network settings, which could allow disruption of connected infrastructure or physical damage to equipment.

Vulnerability class: Broken Authentication

EPSS: 0.004 (37.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Tycon Systems Tpdin-monitor-web2 — versions 2.3.9

Weakness classification (CWE)

CWE-306 — Missing Authentication for Critical Function

References

Frequently asked questions

What is CVE-2026-61884?: CVE-2026-61884 is a critical-severity vulnerability in Tycon Systems Tpdin-Monitor-Web2, classified under Missing Authentication for Critical Function. CVSS score: 9.8/10. Published 2026-07-24.
How severe is CVE-2026-61884?: Critical severity. CVSS v3 base score is 9.8 out of 10.