CVE Feed

    Dashboard / CVE / CVE-1999-1150

    CVE-1999-1150

    Livingston Portmaster routers running ComOS use the same initial sequence number (ISN) for TCP connections, which allows remote attackers to conduct spoofing and hijack TCP sessions.

    Published:Jun 30, 1998
    Last Modified:Apr 16, 2026
    EPS:Sep 12, 2001
    EPSS Score:0.00636
    CVSS Score:7.5

    Affected Products

    Vendor
    Livingston Portmaster
    Product
    Portmaster

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    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