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CVE-2026-64827— Telenia TVox 26.5.3 Authentication Bypass via set_env.php

Quick assessment

Affected
Telenia Software TVox
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Telenia Software TVox是Telenia Software公司的一款VoIP电话系统软件。 Telenia Software TVox 26.5.3及之前的26.x版本和24.9.21及之前的24.x版本存在输入验证错误漏洞，该漏洞源于set_env.php中的redirectToLoginAdminIRequestHaveAccessToken()函数从PHP_SELF获取页面名，在匹配'login_admin.php'时跳过身份验证，导致攻击者可通过附加'/login_admin.p

CVSS 9.8 · Critical EPSS 0.83% · P56

Affected Version Matrix 2

VendorProduct Version RangeStatus
Telenia Software TVox 26.0.0≤ 26.5.3 affected
24.0.0≤ 24.9.21 affected
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I. Basic Information for CVE-2026-64827

Vulnerability Information
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Vulnerability Title
Telenia TVox 26.5.3 Authentication Bypass via set_env.php
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
在安全决策中依赖未经信任的输入
Source: CVE Program / CVE List V5
Vulnerability Title
Telenia Software TVox 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Telenia Software TVox是Telenia Software公司的一款VoIP电话系统软件。 Telenia Software TVox 26.5.3及之前的26.x版本和24.9.21及之前的24.x版本存在输入验证错误漏洞，该漏洞源于set_env.php中的redirectToLoginAdminIRequestHaveAccessToken()函数从PHP_SELF获取页面名，在匹配'login_admin.php'时跳过身份验证，导致攻击者可通过附加'/login_admin.p
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Telenia Software TVox 26.0.0 ~ 26.5.3 -

II. Public POCs for CVE-2026-64827

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III. Intelligence Information for CVE-2026-64827

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Vendor Advisories for CVE-2026-64827 (1)

Vendor Pages for CVE-2026-64827 (1)

Other References for CVE-2026-64827 (1)

Same Patch Batch · Telenia Software · 2026-08-03 · 3 CVEs total

CVE-2026-67609 7.8 HIGH Telenia TVox 26.5.3 Privilege Escalation via Insecure sudoers Configuration
CVE-2026-67608 7.2 HIGH Telenia TVox 26.5.3 OS Command Injection via action_audio.php

IV. Related Vulnerabilities

Same product: TVox
Same vendor: Telenia Software
Same weakness: CWE-807

V. Comments for CVE-2026-64827

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