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    CVE-2026-55706

    sppp_pap_input in sys/net/if_spppsubr.c in OpenBSD before 076e2b1 allows authentication bypass via certain zero values for lengths.

    Published:Jun 17, 2026
    Last Modified:Jun 17, 2026
    EPS:Jun 17, 2026
    EPSS Score:0.00238
    CVSS Score:5.8

    Affected Products

    Vendor
    Openbsd
    Product
    Openbsd

    Exploits

    https://blog.argus-systems.ai/blog/openbsd-pap-27-year-auth-bypass.htmlhttps://www.openwall.com/lists/oss-security/2026/06/16/9https://blog.argus-systems.ai/blog/poc-001-pap-bypass.py

    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