Telenia TVox up to 24.9.21/26.5.3 set_env.php redirectToLoginAdminIRequestHaveAccessToken improper authentication

Summaryinfo

A vulnerability classified as critical was found in Telenia TVox up to 24.9.21/26.5.3. This affects the function redirectToLoginAdminIRequestHaveAccessToken of the file set_env.php. Such manipulation leads to improper authentication. This vulnerability is traded as CVE-2026-64827. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability was found in Telenia TVox up to 24.9.21/26.5.3 and classified as critical. Affected by this issue is the function redirectToLoginAdminIRequestHaveAccessToken of the file set_env.php. The manipulation with an unknown input leads to a improper authentication vulnerability. Using CWE to declare the problem leads to CWE-287. When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at karmainsecurity.com. This vulnerability is handled as CVE-2026-64827 since 07/20/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 08/03/2026).

By approaching the search of inurl:set_env.php it is possible to find vulnerable targets with Google Hacking.

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• Telenia

Name

• TVox

Version

• 24.9.0
• 24.9.1
• 24.9.2
• 24.9.3
• 24.9.4
• 24.9.5
• 24.9.6
• 24.9.7
• 24.9.8
• 24.9.9
• 24.9.10
• 24.9.11
• 24.9.12
• 24.9.13
• 24.9.14
• 24.9.15
• 24.9.16
• 24.9.17
• 24.9.18
• 24.9.19
• 24.9.20
• 24.9.21
• 26.5.0
• 26.5.1
• 26.5.2
• 26.5.3

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