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    1 vulnerability by AT&T Bell Labs

    CVE-2025-71263 (GCVE-0-2025-71263)

    Vulnerability from cvelistv5 – Published: 2026-03-13 18:38 – Updated: 2026-03-21 22:00 Unsupported When Assigned
    VLAI
    Summary
    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.
    Severity
    7.4 (High)
    CVSS:3.1/AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
    SSVC
    Exploitation: none Automatable: no Technical Impact: total
    CISA Coordinator (v2.0.3)
    CWE
    • CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
    Assigner
    References
    Impacted products
    Vendor Product Version
    AT&T Bell Labs UNIX Affected: 4 (custom)
    		Create a notification for this product.
    Show details on NVD website
    To clipboard 

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