CVE-2025-34333
AudioCodes Fax/IVR Appliance <= 2.6.23 World-Writable Webroot LPE
HIGH 8.5EPSS 0.2%
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.
- Affected
- AudioCodes Limited · AudioCodes Fax/IVR Appliance
- CVSS v4.0 VULNCHECK
- 8.5 HIGH
CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - CVSS v3.1 NVD
- 7.8 HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H - EPSS
- 0.20% chance of exploitation in the next 30 days, 10th percentile
- Published
- 2025-11-19
- Updated
- 2025-11-20
Proof-of-concept exploits (2)
- https://pierrekim.github.io/blog/2025-11-20-audiocodes-fax-ivr-8-vulnerabilities.html
- https://pierrekim.github.io/advisories/2025-audiocodes-fax-ivr.txt
Security advisories
- https://www.vulncheck.com/advisories/audiocodes-fax-ivr-appliance-world-writable-webroot-…
- https://www.audiocodes.com/media/g1in2u2o/0548-product-notice-end-of-service-for-audiocod…