CVE Feed

    Dashboard / CVE / CVE-2025-71263

    CVE-2025-71263

    In UNIX Fourth Research Edition (v4), the su command is vulnerable to a buffer overflow due to the 'password' variable having a fixed size of 100 bytes. A local user can exploit this to gain root privileges. It is unlikely that UNIX v4 is running anywhere outside of a very small number of lab environments. NOTE: This vulnerability only affects products that are no longer supported by the maintainer.

    Published:Mar 13, 2026
    Last Modified:Jun 11, 2026
    EPS:Mar 13, 2026
    EPSS Score:0.00006
    CVSS Score:7.4

    Affected Products

    Vendor
    At&t Bell Labs
    Product
    Unix
    Vendor
    Opengroup
    Product
    Unix

    Exploits

    No exploit reference

    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