PT-2025-47479 · Audiocodes · Audiocodes Fax Server+1

Pierre Barre · Published 2025-11-19 · Updated 2025-11-19 · CVE-2025-34330

Positive Technologies (AI Summary)

CVSS v4.0

6.9

Medium

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

Name of the Vulnerable Software and Affected Versions AudioCodes Fax Server and Auto-Attendant IVR appliances versions up to and including 2.6.23

Description The web administration component (F2MAdmin) includes an unauthenticated prompt upload endpoint at /AudioCodes files/utils/IVR/diagram/ajaxPromptUploadFile.php. This script accepts uploaded files and writes them to the C:F2MAdmintmp directory using a filename derived from application constants, without authentication, authorization, or file-type validation. An unauthenticated remote attacker can upload or overwrite prompt- or music-on-hold–related files, potentially tampering with IVR audio content or preparing files for further attacks.

Recommendations Versions prior to 2.6.23 should be updated.

Exploit

Fix

Unrestricted File Upload

Weakness Enumeration

CWE-434

Related Identifiers

CVE-2025-34330

Affected Products

Audiocodes Fax Server

Auto-Attendant Ivr

References · 7

• 🔥 https://pierrekim.github.io/advisories/2025-audiocodes-fax-ivr.txt · Exploit
• 🔥 https://pierrekim.github.io/blog/2025-11-20-audiocodes-fax-ivr-8-vulnerabilities.html · Exploit
• https://nvd.nist.gov/vuln/detail/CVE-2025-34330 · Security Note
• https://osv.dev/vulnerability/CVE-2025-34330 · Vendor Advisory
• https://twitter.com/CVEnew/status/1991187288060252266 · Twitter Post
• https://vulncheck.com/advisories/audiocodes-fax-ivr-appliance-unauthenticated-prompt-file-upload-via-ajaxpromptuploadfile · Note
• https://audiocodes.com/media/g1in2u2o/0548-product-notice-end-of-service-for-audiocodes-auto-attendant-ivr-solution.pdf · Patch, Vendor Advisory