CVE-2025-34330: fax server through 2.6.23 (inclusive); +2 more affected products

Affected technology

fax server · through 2.6.23 (inclusive)
audiocodes

interactive voice response · through 2.6.23 (inclusive)
audiocodes

AudioCodes Fax/IVR Appliance · 0 through 2.6.23
AudioCodes Limited

Description’s affected range: versions up to and including 2.6.23 include a web administration component (F2MAdmin) that exposes an unauthenticated prompt upload endpoint at AudioCodes_files/utils/IVR/diagram/ajaxPromptUploadFile.php

Component: Not specified by the source

Attack conditions (Vendor/CNA, CVSS 4.0): Network (remote) · No privileges required · No user interaction required

What an attacker can do

Unauthenticated attacker can upload or overwrite prompt- or music-on-hold–related files in this directory, potentially leading to tampering with IVR audio content or preparing files for use in further attacks. Vendor/CNA’s CVSS 4.0 assessment (base score 6.9/10) rates confidentiality and availability impact as none; integrity impact as low.