CVE-2025-15681

Critical

Description

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.

SeverityCritical
CVSS9.2
Exploit probability—
ProductTBEA TLogger (TBEA Communication Box 3rd Generation)
PublishedAug 10, 2026
First seenAug 10, 2026

How to fix

Sources list no fixed version or patch link for this vulnerability.

Affected products

ProductAffected versionsFixed in
TBEA TBEA TLogger (TBEA Communication Box 3rd Generation)v ≤ V2.1.0.0B0.0.0.0—

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