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    CVE-2025-30258

    In GnuPG before 2.5.5, if a user chooses to import a certificate with certain crafted subkey data that lacks a valid backsig or that has incorrect usage flags, the user loses the ability to verify signatures made from certain other signing keys, aka a "verification DoS."

    Published:Mar 19, 2025
    Last Modified:Oct 16, 2025
    EPS:Mar 19, 2025
    EPSS Score:0.00022
    CVSS Score:2.7

    Affected Products

    Vendor
    Gnupg
    Product
    Gnupg

    Exploits

    https://dev.gnupg.org/T7527

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

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    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