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    CVE-2026-40857

    WNC T-Mobile 5G Box IDU router contains a cross-site request forgery (CSRF) vulnerability in the portal.cgi component. The anti-CSRF mechanism fails to validate the csrf_token_value parameter, accepting any arbitrary value as valid. This allows a remote attacker to perform unauthorized actions on the device by tricking an authenticated user into visiting a malicious website.This issue has been fixed in firmware version 1.1.0.651412

    Published:Sep 16, 2026
    Last Modified:Sep 16, 2026
    EPS:Sep 16, 2026
    EPSS Score:
    CVSS Score:8.4

    Affected Products

    Vendor
    Wnc
    Product
    T-mobile 5g Box Idu

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-352 Cross-Site Request Forgery

    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