CVE-2025-15681

Insufficient Webserver Authentication

Published Aug 10, 2026 CVSS 4.0 · 9.2 Critical EPSS < 1% KEV · Not listed
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
References
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Tbea
Tbea tbea Tlogger
Vendors & Products Tbea
Tbea tbea Tlogger
Type Values Removed Values Added
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.
Title Insufficient Webserver Authentication
Weaknesses CWE-306
References
Metrics cvssV4_0

{'score': 9.2, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
CyberDanube
Published
Updated
Aug 12, 2026, 6:13 PM
Reserved
Aug 4, 2026, 11:34 AM
Status
Deferred
Published
Aug 10, 2026, 8:17 PM
Modified
Sep 29, 2026, 11:10 AM