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CVE-2025-34333

AudioCodes Fax/IVR Appliance <= 2.6.23 World-Writable Webroot 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 configure the web document root at C:\\F2MAdmin\\F2E with overly permissive file system permissions. Authenticated local users have modify rights on this directory, while the associated web server process runs as NT AUTHORITY\\SYSTEM. As a result, any local user can create or alter server-side scripts within the webroot and then trigger them via HTTP requests, causing arbitrary code to execute with SYSTEM 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

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

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

Timeline

Published
Nov 19, 2025
Last Updated
Dec 11, 2025

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