AudioCodes Fax/IVR Appliance <= 2.6.23 Insecure Service Control Scripts LPE
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
AudioCodes Fax Server and Auto-Attendant IVR appliances versions up to and including 2.6.23 include a web administration component that controls back-end Windows services using helper batch scripts located under C:\\F2MAdmin\\F2E\\AudioCodes_files\\utils\\Services. When certain service actions are requested through ajaxPost.php, these scripts are invoked by PHP using system() under the NT AUTHORITY\\SYSTEM account. The batch files in this directory are writable by any authenticated local user due to overly permissive ACLs, allowing them to replace script contents with arbitrary commands. On the next service start/stop operation, the modified script is executed as SYSTEM, enabling elevation of local privileges.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| AudioCodes Limited | AudioCodes Fax/IVR Appliance | up to 2.6.23 | — | No fix listed | CNA |
- AudioCodes Fax/IVR Appliance VendorAudioCodes Limited Affected up to 2.6.23 Fixed in — No fix listed CNA
CPE configurations NVD · 2
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:audiocodes:fax_server:*:*:*:*:*:*:*:* | up to 2.6.23 | Vulnerable | AudioCodes Limited |
| cpe:2.3:a:audiocodes:interactive_voice_response:*:*:*:*:*:*:*:* | up to 2.6.23 | Vulnerable | AudioCodes 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-2025-24458 AudioCodes Fax/IVR Appliance <= 2.6.23 Unauthenticated Backup Upload RCE via ajaxBackupUploadFile.phpPriority MEDIUM 50
- 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
Timeline
- 2026-10-02 Threatist record created from CVE-2025-34332
- 2026-10-03 Alias added: GHSA-x8c7-9v8r-m3jq
References
More AudioCodes Limited Fax Server vulnerabilities
- TI-2025-24458 AudioCodes Fax/IVR Appliance <= 2.6.23 Unauthenticated Backup Upload RCE via ajaxBackupUploadFile.php CVSS 4.0CRITICAL 9.3
- 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
Sources
- CVE-2025-34332 · CVE Program
- CVE-2025-34332 · NVD
- FIRST EPSS
- GHSA-x8c7-9v8r-m3jq · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences