Vulnerability in Telenia Software Tvox
CVE-2026-64827
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.
EPSS: 0.005 (40.1th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Telenia Software Tvox — versions 26.0.0, 24.0.0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (technical-description, exploit)
- disclosure@vulncheck.com (product)
- disclosure@vulncheck.com (third-party-advisory)
- af854a3a-2127-422b-91ae-364da2661108
Frequently asked questions
- What is CVE-2026-64827?
- CVE-2026-64827 is a critical-severity vulnerability in Telenia Software Tvox, classified under CWE-807. CVSS score: 9.8/10. Published 2026-08-03.
- How severe is CVE-2026-64827?
- Critical severity. CVSS v3 base score is 9.8 out of 10.