---
cve: "CVE-2026-64827"
severity: "CRITICAL"
cvss: 9.3
epss: "44%"
vendor: "Telenia Software"
kev: false
exploited: false
published: "2026-08-03 14:16:27"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-12T16:31:12+02:00"
---

# CVE-2026-64827

> 9.3 CRITICAL

## Beschreibung

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.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Referenzen

- <https://karmainsecurity.com/KIS-2026-14>
- <https://www.teleniasoftware.com/>
- <https://www.vulncheck.com/advisories/telenia-tvox-authentication-bypass-via-set-env-php>
- <http://seclists.org/fulldisclosure/2026/Aug/30>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-64827) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_