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CVE-2025-34330

AudioCodes Fax/IVR Appliance <= 2.6.23 Unauthenticated Prompt File Upload via ajaxPromptUploadFile.php

Published: Nov 19, 2025Updated: Dec 12, 2025 Sources: CVE List NVDCWE-434
NVD MITRE
5.3CVSSMEDIUM
EPSS Score
0.4%
Top 66.5%
CISA KEV
Not in KEV
Exploits
2 Known
Remediation
No Fix Available

Description

AudioCodes Fax Server and Auto-Attendant IVR appliances 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. The script accepts an uploaded file and writes it into the C:\\F2MAdmin\\tmp directory using a filename derived from application constants, without any authentication, authorization, or file-type validation. A remote, 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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:NI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:NConfidentiality
None
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-434

Affected Products

AudioCodes Fax/IVR ApplianceAudioCodes Limited
Embedded
Communications
fax serveraudiocodes
On-prem
Communications / voip-telephony
interactive voice responseaudiocodes
On-prem
Communications / voip-telephony
audiocodes limitedcommercialCommunicationsaka audiocodes
audiocodescommercialILCommunicationsaka audiocodes

Attack Graph

Products CVE Techniques Tactics

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Exploitability

2 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

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MITRE ATT&CK

3 techniques
Command and Control
Initial Access
Persistence
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References

https://www.audiocodes.com/media/g1in2u2o/0548-product-notice-end-of-service-for-audiocodes-auto-attendant-ivr-solution.pdf
audiocodes.com
https://pierrekim.github.io/blog/2025-11-20-audiocodes-fax-ivr-8-vulnerabilities.html
pierrekim.github.io
https://pierrekim.github.io/advisories/2025-audiocodes-fax-ivr.txt
pierrekim.github.io
and 1 more references View all →

Timeline

Published
Nov 19, 2025
Last Updated
Dec 12, 2025

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