CVE-2025-15681: Tbea Tlogger Tbea Communication Box 3rd Generation

Critical severity, CVSS 9.2. EPSS: 0.7% chance of exploitation in the next 30 days.

TBEA TLogger V2.1.0.0B0.0.0.0 contains an authentication bypass in its web server. After a user has previously authenticated to the device, an unauthenticated attacker can directly access protected functionality through the /index.asp endpoint without providing valid credentials. This allows the attacker to access functionality intended for authenticated users and may expose or modify device configuration and data. Logging out from the bypassed state can additionally cause the web server to crash.

Affected products

• Tbea Tbea Tlogger Tbea Communication Box 3rd Generation: up to and including V2.1.0.0B0.0.0.0

Published 2026-08-10. Last modified 2026-09-29.