CVE-2026-64827 Telenia TVox 26.5.3 Authentication Bypass via set_env.php
Attackers can bypass authentication in Telenia TVox by manipulating the PHP_SELF variable to gain unauthenticated access to administrative scripts.
- 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-2026-64827?
CVE-2026-64827 is a critical authentication bypass vulnerability in Telenia Software TVox, published on 3 Aug 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
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.
Weakness: CWE-807
Which versions are affected by CVE-2026-64827?
How do I fix CVE-2026-64827?
No fix has been published for CVE-2026-64827 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-2026-64827 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-64827 exists.
Sources
Also known as GHSA-9v39-f83v-66p8.