CVE-2025-34333

HighCVSS 7.8/10Last modified Oct 18, 2026

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.

Metrics

CVSS 3.1 7.8/10CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-276

Affected software

Vendor	Product	Versions
AudioCodes Limited	AudioCodes Fax/IVR Appliance	<= 2.6.23

References

https://pierrekim.github.io/advisories/2025-audiocodes-fax-ivr.txtExploit, Third Party Advisory
https://pierrekim.github.io/blog/2025-11-20-audiocodes-fax-ivr-8-vulnerabilities.htmlExploit, Third Party Advisory
https://www.audiocodes.com/media/g1in2u2o/0548-product-notice-end-of-service-for-audiocodes-auto-attendant-ivr-solution.pdfProduct
https://www.vulncheck.com/advisories/audiocodes-fax-ivr-appliance-world-writable-webroot-lpeThird Party Advisory

Timeline

Published: Nov 19, 2025
Last modified: Oct 18, 2026
NVD status: Analyzed

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