CVE-2025-34328: AudioCodes Fax Server and Auto-Attendant IVR appliances versions up to and including 2.6.23 include a web…
CVE-2025-34328 · Severity: critical · CVSS 9.8 · Published 2025-11-19
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.
No. Junglewise Threat Intelligence has no report of CVE-2025-34328 being exploited in the wild.
How severe is CVE-2025-34328?
Critical severity, with a CVSS score of 9.8, published 19 November 2025.
Which products and versions are affected?
Audiocodes Fax Server, Audiocodes Interactive Voice Response. The advisory does not name versions.
Is there a fix for CVE-2025-34328?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2025-34328?
Check whether you run Audiocodes Fax Server or Audiocodes Interactive Voice Response. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.