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.
References
| Link | Resource |
|---|---|
| https://pierrekim.github.io/advisories/2025-audiocodes-fax-ivr.txt | Exploit Third Party Advisory |
| https://pierrekim.github.io/blog/2025-11-20-audiocodes-fax-ivr-8-vulnerabilities.html | Exploit Third Party Advisory |
| https://www.audiocodes.com/media/g1in2u2o/0548-product-notice-end-of-service-for-audiocodes-auto-attendant-ivr-solution.pdf | Product |
| https://www.vulncheck.com/advisories/audiocodes-fax-ivr-appliance-unauthenticated-prompt-file-upload-via-ajaxpromptuploadfile | Third Party Advisory |
Configurations
Configuration 1 (hide)
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History
12 Dec 2025, 16:06
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 5.3 |
| CPE | cpe:2.3:a:audiocodes:fax_server:*:*:*:*:*:*:*:* cpe:2.3:a:audiocodes:interactive_voice_response:*:*:*:*:*:*:*:* |
|
| References | () https://pierrekim.github.io/advisories/2025-audiocodes-fax-ivr.txt - Exploit, Third Party Advisory | |
| References | () https://pierrekim.github.io/blog/2025-11-20-audiocodes-fax-ivr-8-vulnerabilities.html - Exploit, Third Party Advisory | |
| References | () https://www.audiocodes.com/media/g1in2u2o/0548-product-notice-end-of-service-for-audiocodes-auto-attendant-ivr-solution.pdf - Product | |
| References | () https://www.vulncheck.com/advisories/audiocodes-fax-ivr-appliance-unauthenticated-prompt-file-upload-via-ajaxpromptuploadfile - Third Party Advisory | |
| First Time |
Audiocodes interactive Voice Response
Audiocodes Audiocodes fax Server |
19 Nov 2025, 17:15
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2025-11-19 17:15
Updated : 2025-12-12 16:06
NVD link : CVE-2025-34330
Mitre link : CVE-2025-34330
CVE.ORG link : CVE-2025-34330
JSON object : View
Products Affected
audiocodes
- interactive_voice_response
- fax_server
CWE
CWE-434
Unrestricted Upload of File with Dangerous Type