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Vulnerabilities

Vulnerability · 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 unauthenticated script

Published Nov 19, 2025 · catalog updated Nov 20, 2025 · AudioCodes Limited AudioCodes Fax/IVR Appliance

Last checked Nov 1, 2026. A connected source was read within the last 7 days.

Check if you run it

No confirmed exploitation is on record for CVE-2025-34328. EPSS is 0.76%. Act only if a listed version of AudioCodes Limited AudioCodes Fax/IVR Appliance is installed.

Gaps on this record

  • No vendor fix or required action is stored. Compare the linked advisory before you change production.

Same product and reporting

Severity
Critical9.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
0.76%
Remediation
Vendor / distro source
Affected products
vendor AudioCodes Limited AudioCodes Fax/IVR Appliance 0 ≤2.6.23

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.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • vendor AudioCodes Limited AudioCodes Fax/IVR Appliance 0 ≤2.6.230 ≤2.6.23

How to fix CVE-2025-34328

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

No confirmed exploitation is on record for CVE-2025-34328. EPSS is 0.76%. Act only if a listed version of AudioCodes Limited AudioCodes Fax/IVR Appliance is installed.

Which versions are affected?

Compare what you have installed with AudioCodes Limited AudioCodes Fax/IVR Appliance 0 ≤2.6.23 0 ≤2.6.23. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

No weakness class is stored. EPSS 0.76%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Nov 19, 2025 · EUVD

    Detected

    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 ru

  2. Nov 20, 2025 · EUVD

    Updated

    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 ru

Sources

  • CVE.orgVulnerability recordCVE-2025-34328

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2025-34328

    30-day exploitation probability 0.76%

    first.org
  • EUVDVulnerability recordEUVD-2025-198196

    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 wri

    euvd.enisa.europa.eu

References

Freshness

Last verified in this catalog Nov 1, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.

  • FIRST EPSSNov 1, 2026
  • CVE.orgOct 28, 2026
  • EUVDOct 28, 2026