CVE-2025-34328
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 u…
Impact
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 script-management endpoint at AudioCodes_files/utils/IVR/diagram/ajaxScript.php. The saveScript action writes attacker-supplied data directly to a server-side file path under the privileges of the web service account, which runs as NT AUTHORITY\\SYSTEM on Windows deployments. A remote, unauthenticated attacker can write arbitrary files into the product’s web-accessible directory structure and subsequently execute them.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Audiocodes | Fax Server | through 2.6.23 |
| Audiocodes | Interactive Voice Response | through 2.6.23 |
Weakness classification
References
- NVD record
- CVE.org record
- https://pierrekim.github.io/advisories/2025-audiocodes-fax-ivr.txt
- https://pierrekim.github.io/blog/2025-11-20-audiocodes-fax-ivr-8-vulnerabilities.html
- https://www.audiocodes.com/media/g1in2u2o/0548-product-notice-end-of-service-for-audiocodes-auto-attendant-ivr-solution.pdf
- https://www.vulncheck.com/advisories/audiocodes-fax-ivr-appliance-unauthenticated-file-upload-rce-via-ajaxscript