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CVE-2025-34335— AudioCodes Fax/IVR Appliance <= 2.6.23 Authenticated Command Injection via ActivateLicense.php

Quick assessment

Affected
AudioCodes Limited AudioCodes Fax/IVR Appliance
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.

AudioCodes Fax Server是以色列AudioCodes公司的一个传真服务器。 AudioCodes Fax Server 2.6.23及之前版本存在安全漏洞，该漏洞源于许可证激活工作流中的命令注入，可能导致任意命令执行。

AI Predicted 8.1 Difficulty: Easy EPSS 2.82% · P86
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I. Basic Information for CVE-2025-34335

Vulnerability Information
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Vulnerability Title
AudioCodes Fax/IVR Appliance <= 2.6.23 Authenticated Command Injection via ActivateLicense.php
Source: CVE Program / CVE List V5
Vulnerability Description
AudioCodes Fax Server and Auto-Attendant IVR appliances versions up to and including 2.6.23 expose an authenticated command injection vulnerability in the license activation workflow handled by AudioCodes_files/ActivateLicense.php. When a license file is uploaded, the application derives a new filename by combining a generated base name with the attacker-controlled extension portion of the original upload name, then constructs a command line for fax_server_lic_cmdline.exe that includes this path. The extension value is incorporated into the command string without input validation, escaping, or proper argument quotation before being passed to exec(). An authenticated user with access to the license upload interface can supply a specially crafted filename whose extension injects additional shell metacharacters, causing arbitrary commands to be executed as NT AUTHORITY\\SYSTEM.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: CVE Program / CVE List V5
Vulnerability Title
AudioCodes Fax Server 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
AudioCodes Fax Server是以色列AudioCodes公司的一个传真服务器。 AudioCodes Fax Server 2.6.23及之前版本存在安全漏洞，该漏洞源于许可证激活工作流中的命令注入，可能导致任意命令执行。
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
AudioCodes Limited AudioCodes Fax/IVR Appliance 0 ~ 2.6.23 -

II. Public POCs for CVE-2025-34335

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III. Intelligence Information for CVE-2025-34335

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Vendor Advisories for CVE-2025-34335 (1)

Security Blog Posts for CVE-2025-34335 (1)

Same Patch Batch · AudioCodes Limited · 2025-11-19 · 8 CVEs total

CVE-2025-34334 AudioCodes Fax/IVR Appliance <= 2.6.23 Authenticated Command Injection via TestFax.php & L
CVE-2025-34328 AudioCodes Fax/IVR Appliance <= 2.6.23 Unauthenticated File Upload RCE via ajaxScript.php
CVE-2025-34332 AudioCodes Fax/IVR Appliance <= 2.6.23 Insecure Service Control Scripts LPE
CVE-2025-34333 AudioCodes Fax/IVR Appliance <= 2.6.23 World-Writable Webroot LPE
CVE-2025-34331 AudioCodes Fax/IVR Appliance <= 2.6.23 Unauthenticated File Read via download.php
CVE-2025-34329 AudioCodes Fax/IVR Appliance <= 2.6.23 Unauthenticated Backup Upload RCE via ajaxBackupUpl
CVE-2025-34330 AudioCodes Fax/IVR Appliance <= 2.6.23 Unauthenticated Prompt File Upload via ajaxPromptUp

IV. Related Vulnerabilities

Same product: AudioCodes Fax/IVR Appliance
Same vendor: AudioCodes Limited
Same weakness: CWE-78

V. Comments for CVE-2025-34335

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