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    CVE-2025-6966

    NULL pointer dereference in TagSection.keys() in python-apt on APT-based Linux systems allows a local attacker to cause a denial of service (process crash) via a crafted deb822 file with a malformed non-UTF-8 key.

    Published:Dec 5, 2025
    Last Modified:Jan 7, 2026
    EPS:Dec 5, 2025
    EPSS Score:0.0002
    CVSS Score:5.5

    Affected Products

    Vendor
    Canonical
    Product
    Python-apt
    Vendor
    Canonical
    Product
    Ubuntu Linux
    Vendor
    Debian
    Product
    Debian Linux
    Vendor
    Ubuntu
    Product
    Python-apt

    Exploits

    https://bugs.launchpad.net/ubuntu/+source/python-apt/+bug/2091865

    Common Weakness Enumeration

    CWE-476 NULL Pointer Dereference

    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