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    CVE-2025-34333

    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.

    Published:Nov 19, 2025
    Last Modified:Dec 11, 2025
    EPS:Nov 19, 2025
    EPSS Score:0.00011
    CVSS Score:7.8

    Affected Products

    Vendor
    Audiocodes
    Product
    Fax\/ivr
    Vendor
    Audiocodes
    Product
    Fax Server
    Vendor
    Audiocodes
    Product
    Interactive Voice Response

    Exploits

    https://pierrekim.github.io/advisories/2025-audiocodes-fax-ivr.txthttps://pierrekim.github.io/blog/2025-11-20-audiocodes-fax-ivr-8-vulnerabilities.html

    Common Weakness Enumeration

    CWE-276 Incorrect Default Permissions

    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High