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    CVE-2005-4436

    Extended Interior Gateway Routing Protocol (EIGRP) 1.2, as implemented in Cisco IOS after 12.3(2), 12.3(3)B, and 12.3(2)T and other products, allows remote attackers to cause a denial of service by sending a "spoofed neighbor announcement" with (1) mismatched k values or (2) "goodbye message" Type-Length-Value (TLV).

    Published:Dec 21, 2005
    Last Modified:Apr 16, 2026
    EPS:Dec 21, 2005
    EPSS Score:0.01602
    CVSS Score:7.8

    Affected Products

    Vendor
    Extended Interior Gateway Routing Protocol
    Product
    Extended Interior Gateway Routing Protocol

    Exploits

    No exploit reference

    Common Weakness Enumeration

    No CWE recorded yet

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    References

    http://lists.grok.org.uk/pipermail/full-disclosure/2005-December/040330.html
    http://marc.info/?l=full-disclosure&m=113504451523186&w=2
    http://securitytracker.com/id?1015382
    http://www.securityfocus.com/archive/1/419898/100/0/threaded
    http://www.securityfocus.com/bid/15978
    http://www.vupen.com/english/advisories/2005/3008
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5454
    http://lists.grok.org.uk/pipermail/full-disclosure/2005-December/040330.html
    http://marc.info/?l=full-disclosure&m=113504451523186&w=2
    http://securitytracker.com/id?1015382
    http://www.securityfocus.com/archive/1/419898/100/0/threaded
    http://www.securityfocus.com/bid/15978
    http://www.vupen.com/english/advisories/2005/3008
    https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5454

    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