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    CVE-2001-0288

    Cisco switches and routers running IOS 12.1 and earlier produce predictable TCP Initial Sequence Numbers (ISNs), which allows remote attackers to spoof or hijack TCP connections.

    Published:May 3, 2001
    Last Modified:Apr 16, 2026
    EPS:May 7, 2001
    EPSS Score:0.03983
    CVSS Score:7.5

    Affected Products

    Vendor
    Cisco
    Product
    Ios

    Exploits

    https://www.exploit-db.com/exploits/19522

    Common Weakness Enumeration

    No CWE recorded yet

    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