CVE-2026-64827

Telenia TVox 26.5.3 Authentication Bypass via set_env.php

Assigner: VulnCheck
Reserved: 20.07.2026 Published: 03.08.2026 Updated: 03.08.2026

Telenia Software TVox 26.5.3 and prior 26.x versions, and 24.9.21 and prior 24.x versions, contain an authentication bypass vulnerability in set_env.php where the redirectToLoginAdminIRequestHaveAccessToken() function derives the current page name from PHP_SELF and skips authentication when the value matches 'login_admin.php'. Attackers can append '/login_admin.php' to the path of any target PHP script to cause the authentication check to pass and gain unauthenticated access to all PHP scripts under the manager HTML directory.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
CVSS Score: 9.3

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Network	Confidentiality	High	Confidentiality	None
Attack Complexity	Low	Integrity	High	Integrity	None
Attack Requirements	None	Availability	High	Availability	None
Privileges Required	None
User Interaction	None

CVSS 4.0

CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 9.8

Attack Vector	Network	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	None	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

Product Status

Vendor	Telenia Software
Product	TVox
Versions	Default: affected affected from 26.0.0 to 26.5.3 (incl.) affected from 24.0.0 to 24.9.21 (incl.)

Vendor

Telenia Software

Product

TVox

Versions

Default: affected

affected from 26.0.0 to 26.5.3 (incl.)
affected from 24.0.0 to 24.9.21 (incl.)

Credits

Egidio Romano finder

References

Problem Types