CVE-2025-15681 Insufficient Webserver Authentication
Unauthenticated attackers can bypass web server authentication to access protected functionality, potentially modifying device configuration and data.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-15681?
CVE-2025-15681 is a critical authentication bypass vulnerability in TBEA TLogger (TBEA Communication Box 3rd Generation), published on 10 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official 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.
Weakness: CWE-306
Which versions are affected by CVE-2025-15681?
How do I fix CVE-2025-15681?
No fix has been published for CVE-2025-15681 yet. Limit exposure of the affected software until one is available.
Upgrade, and rotate credentials and sessions that may have been exposed. More about Authentication bypass.
Is CVE-2025-15681 being exploited?
There is no known exploitation of CVE-2025-15681 in the wild and no public exploit code.
Sources
Also known as GHSA-m738-f6gp-rv3j.