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    CVE-2007-5639

    The Nortel UNIStim IP Softphone 2050, IP Phone 1140E, and other Nortel IP Phone, Mobile Voice Client, and WLAN Handsets products allow remote attackers to cause a denial of service (device hang) via a flood of Mute and UnMute messages that have a spoofed source IP address for the Signaling Server.

    Published:Oct 23, 2007
    Last Modified:Apr 23, 2026
    EPS:Oct 23, 2007
    EPSS Score:0.01211
    CVSS Score:7.1

    Affected Products

    Vendor
    Nortel
    Product
    Ip Audio Conference Phone 2033
    Vendor
    Nortel
    Product
    Ip Phone 1110
    Vendor
    Nortel
    Product
    Ip Phone 1120e
    Vendor
    Nortel
    Product
    Ip Phone 1140e
    Vendor
    Nortel
    Product
    Ip Phone 1150e
    Vendor
    Nortel
    Product
    Ip Phone 2001
    Vendor
    Nortel
    Product
    Ip Phone 2002
    Vendor
    Nortel
    Product
    Ip Phone 2004
    Vendor
    Nortel
    Product
    Ip Softphone 2050
    Vendor
    Nortel
    Product
    Mobile Voice Client 2050
    Vendor
    Nortel
    Product
    Wlan Handset 2210
    Vendor
    Nortel
    Product
    Wlan Handset 2211
    Vendor
    Nortel
    Product
    Wlan Handset 2212
    Vendor
    Nortel
    Product
    Wlan Handset 6120
    Vendor
    Nortel
    Product
    Wlan Handset 6140

    Exploits

    http://www.csnc.ch/static/advisory/csnc/nortel_IP_phone_flooding_denial_of_service_v1.0.txthttp://www.csnc.ch/static/advisory/csnc/nortel_IP_phone_flooding_denial_of_service_v1.0.txt

    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