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    CVE-2025-66719

    An issue was discovered in Free5gc NRF 1.4.0. In the access-token generation logic of free5GC, the AccessTokenScopeCheck() function in file internal/sbi/processor/access_token.go bypasses all scope validation when the attacker uses a crafted targetNF value. This allows attackers to obtain an access token with any arbitrary scope.

    Published:Jan 23, 2026
    Last Modified:Feb 11, 2026
    EPS:Jan 23, 2026
    EPSS Score:0.00039
    CVSS Score:9.1

    Affected Products

    Vendor
    Free5gc
    Product
    Nrf

    Exploits

    https://github.com/free5gc/free5gc/issues/736

    Common Weakness Enumeration

    CWE-863 Incorrect Authorization

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    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