Vulnerability · Published Aug 3, 2026 · Assigned by VulnCheck

CVE-2026-64827Telenia TVox 26.5.3 Authentication Bypass via set_env.php

Critical 9.8

In plain English

A critical-severity security flaw in TVox from Telenia Software. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.8% (higher than 58% of all known vulnerabilities).

Severity (CVSS 3.1)9.8Critical

Exploit odds (30 days)0.8%top 42.3% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

Vendor	Product	Versions
Telenia Software	TVox	26.0.0 – through 26.5.324.0.0 – through 24.9.21

Weakness: CWE-807 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

References

Karma(in)Security Disclosure (KIS-2026-14) technical-description, exploit
Supplier Homepage product
https://www.vulncheck.com/advisories/telenia-tvox-authentication-bypass-via-set-env-php third-party-advisory
http://seclists.org/fulldisclosure/2026/Aug/30