CVE-2025-34333: high-severity vulnerability in AudioCodes Fax/IVR Appliance
AudioCodes Fax/IVR Appliance <= 2.6.23 World-Writable Webroot LPE
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
21Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 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.
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
Affected products
AudioCodes Limited · AudioCodes Fax/IVR ApplianceRelated CVEs — AudioCodes Fax/IVR Appliance
In the same product, most dangerous first.
CVE-2025-34334HIGHAudioCodes Fax/IVR Appliance <= 2.6.23 Authenticated Command Injection via TestFax.php & LPEEPSS 3.4%CVE-2025-34335HIGHAudioCodes Fax/IVR Appliance <= 2.6.23 Authenticated Command Injection via ActivateLicense.phpEPSS 2.8%CVE-2025-34329CRITICALAudioCodes Fax/IVR Appliance <= 2.6.23 Unauthenticated Backup Upload RCE via ajaxBackupUploadFile.phpEPSS 1.2%CVE-2025-34328CRITICALAudioCodes Fax/IVR Appliance <= 2.6.23 Unauthenticated File Upload RCE via ajaxScript.phpEPSS 0.8%CVE-2025-34331HIGHAudioCodes Fax/IVR Appliance <= 2.6.23 Unauthenticated File Read via download.phpEPSS 0.6%CVE-2025-34330MEDIUMAudioCodes Fax/IVR Appliance <= 2.6.23 Unauthenticated Prompt File Upload via ajaxPromptUploadFile.phpEPSS 0.5%
References
https://pierrekim.github.io/advisories/2025-audiocodes-fax-ivr.txthttps://pierrekim.github.io/blog/2025-11-20-audiocodes-fax-ivr-8-vulnerabilities.htmlhttps://www.audiocodes.com/media/g1in2u2o/0548-product-notice-end-of-service-for-audiocodes-auto-attendant-ivr-solution.pdfhttps://www.vulncheck.com/advisories/audiocodes-fax-ivr-appliance-world-writable-webroot-lpe