Read the docs
TI-2025-24458 Aliases CVE-2025-34329GHSA-x988-43fg-2vcq

AudioCodes Fax/IVR Appliance <= 2.6.23 Unauthenticated Backup Upload RCE via ajaxBackupUploadFile.php

Priority MEDIUM 50CWE-434Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Code execution
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-434.

Summary

AudioCodes Fax Server and Auto-Attendant IVR appliances versions up to and including 2.6.23 expose an unauthenticated backup upload endpoint at AudioCodes_files/ajaxBackupUploadFile.php in the F2MAdmin web interface. The script derives a backup folder path from application configuration, creates the directory if it does not exist, and then moves an uploaded file to that location using the attacker-controlled filename, without any authentication, authorization, or file-type validation. On default Windows deployments where the backup directory resolves to the system drive, a remote attacker can upload web server or interpreter configuration files that cause a log file or other server-controlled resource to be treated as executable code. This allows subsequent HTTP requests to trigger arbitrary command execution under the web server account, which runs as NT AUTHORITY\\SYSTEM.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.01193 68th percentileScored 2026-11-07
Public exploit Yes 2 exploit referencesTagged by the CNA and NVD
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
AudioCodes LimitedAudioCodes Fax/IVR Applianceup to 2.6.23—No fix listedCNA
  • AudioCodes Fax/IVR Appliance VendorAudioCodes Limited Affected up to 2.6.23 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:a:audiocodes:fax_server:*:*:*:*:*:*:*:*up to 2.6.23VulnerableAudioCodes Limited
cpe:2.3:a:audiocodes:interactive_voice_response:*:*:*:*:*:*:*:*up to 2.6.23VulnerableAudioCodes Limited
  • cpe:2.3:a:audiocodes:fax_server:*:*:*:*:*:*:*:* Versions up to 2.6.23 Vulnerable ·AudioCodes Limited
  • cpe:2.3:a:audiocodes:interactive_voice_response:*:*:*:*:*:*:*:* Versions up to 2.6.23 Vulnerable ·AudioCodes Limited

Remediation

No fixed version listed by the sources yet.

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    AudioCodes Fax/IVR Appliance — audiocodes.com/media/g1in2u2o/0548-product-notice-end-of-se…

    8 records Highest priority Priority MEDIUM 5 MEDIUM, 3 LOW

    Other records, highest priority first

    • TI-2025-24457 AudioCodes Fax/IVR Appliance <= 2.6.23 Unauthenticated File Upload RCE via ajaxScript.phpPriority MEDIUM 49
    • TI-2025-24463 AudioCodes Fax/IVR Appliance <= 2.6.23 Authenticated Command Injection via TestFax.php & LPEPriority MEDIUM 46
    • TI-2025-24464 AudioCodes Fax/IVR Appliance <= 2.6.23 Authenticated Command Injection via ActivateLicense.phpPriority MEDIUM 45
    Show all 8 records → Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2025-34329
  2. 2026-10-03 Alias added: GHSA-x988-43fg-2vcq

References

Exploit 2

Patch 1

  • TI-2025-24457 AudioCodes Fax/IVR Appliance <= 2.6.23 Unauthenticated File Upload RCE via ajaxScript.php CVSS 4.0CRITICAL 9.3
  • TI-2025-24463 AudioCodes Fax/IVR Appliance <= 2.6.23 Authenticated Command Injection via TestFax.php & LPE CVSS 4.0HIGH 8.7
  • TI-2025-24464 AudioCodes Fax/IVR Appliance <= 2.6.23 Authenticated Command Injection via ActivateLicense.php CVSS 4.0HIGH 8.7
  • TI-2025-24460 AudioCodes Fax/IVR Appliance <= 2.6.23 Unauthenticated File Read via download.php CVSS 4.0HIGH 8.7
  • TI-2025-24462 AudioCodes Fax/IVR Appliance <= 2.6.23 World-Writable Webroot LPE CVSS 4.0HIGH 8.5
  • TI-2025-24461 AudioCodes Fax/IVR Appliance <= 2.6.23 Insecure Service Control Scripts LPE CVSS 4.0HIGH 8.5
See all 7 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences