Authentication Bypass Vulnerability in Telenia Software TVox
CVE-2026-64827

9.3CRITICAL

Key Information:

Vendor

Telenia Software

Status
Tvox
Vendor
CVE Published:
3 August 2026

Badges

👾 Exploit Exists🟡 Public PoC

What is CVE-2026-64827?

An authentication bypass vulnerability exists in Telenia Software TVox versions 26.5.3 and earlier, as well as 24.9.21 and prior. The flaw is located in the set_env.php file, specifically within the redirectToLoginAdminIRequestHaveAccessToken() function. This function improperly derives the current page name using PHP_SELF, allowing attackers to bypass authentication when the page name is 'login_admin.php'. By appending '/login_admin.php' to the target PHP script's path, an attacker can circumvent the authentication checks, granting unauthenticated access to all PHP scripts located in the manager HTML directory, thereby potentially exposing sensitive management functionalities.

Affected Version(s)

TVox 26.0.0 <= 26.5.3

TVox 26.0.0 <= 26.5.3

TVox 24.0.0 <= 24.9.21

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2026-64827 - Proof of Concept

References

https://karmainsecurity.com/KIS-2026-14
technical-descriptionexploit
https://www.teleniasoftware.com/
product
https://www.vulncheck.com/advisories/telenia-tvox-authent...
third-party-advisory

CVSS V4

Score:
9.3
Severity:
CRITICAL
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 🟡

    Public PoC available

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

Credit

Egidio Romano
.