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CVE-2025-34332

AudioCodes Fax/IVR Appliance <= 2.6.23 Insecure Service Control Scripts LPE

Published: Nov 19, 2025Updated: Dec 11, 2025 Sources: CVE List NVDCWE-276
NVD MITRE
7.8CVSSHIGH
EPSS Score
0.2%
Top 92.6%
CISA KEV
Not in KEV
Exploits
2 Known
Remediation
No Fix Available

Description

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.

CVSS Vector Breakdown

AV:LAC:LPR:LUI:NS:UC:HI:HA:H
Exploitability
AV:LAttack Vector
Local
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-276

Affected Products

fax serveraudiocodes
On-prem
Communications / voip-telephony
interactive voice responseaudiocodes
On-prem
Communications / voip-telephony
AudioCodes Fax/IVR ApplianceAudioCodes Limited
Embedded
Communications
audiocodescommercialILCommunicationsaka audiocodes
audiocodes limitedcommercialCommunicationsaka audiocodes

Attack Graph

Products CVE Techniques Tactics

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Exploitability

2 exploit sources identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

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MITRE ATT&CK

1 technique
Privilege Escalation
View detailed technique mapping

References

https://pierrekim.github.io/advisories/2025-audiocodes-fax-ivr.txt
pierrekim.github.io
https://pierrekim.github.io/blog/2025-11-20-audiocodes-fax-ivr-8-vulnerabilities.html
pierrekim.github.io
https://www.audiocodes.com/media/g1in2u2o/0548-product-notice-end-of-service-for-audiocodes-auto-attendant-ivr-solution.pdf
audiocodes.com
and 1 more references View all →

Timeline

Published
Nov 19, 2025
Last Updated
Dec 11, 2025

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