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    CVE-2008-6564

    Nortel UNIStim protocol, as used in Communication Server 1000 and other products, uses predictable sequence numbers, which allows remote attackers to hijack sessions via sniffing or brute force attacks.

    Published:Mar 31, 2009
    Last Modified:Apr 23, 2026
    EPS:Mar 31, 2009
    EPSS Score:0.01938
    CVSS Score:7.6

    Affected Products

    Vendor
    Nortel
    Product
    Communication Server 1000
    Vendor
    Nortel
    Product
    Unistim 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://osvdb.org/44379
    http://secunia.com/advisories/29747
    http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=713455
    http://www.securityfocus.com/bid/28691
    http://www.securitytracker.com/id?1019847
    http://www.voipshield.com/research-details.php?id=27&s=4&threats_details=&threats_category=0&threats_vendor=0&limit=20&sort=discovered&sortby=DESC
    https://exchange.xforce.ibmcloud.com/vulnerabilities/41801
    http://osvdb.org/44379
    http://secunia.com/advisories/29747
    http://support.nortel.com/go/main.jsp?cscat=BLTNDETAIL&id=713455
    http://www.securityfocus.com/bid/28691
    http://www.securitytracker.com/id?1019847
    http://www.voipshield.com/research-details.php?id=27&s=4&threats_details=&threats_category=0&threats_vendor=0&limit=20&sort=discovered&sortby=DESC
    https://exchange.xforce.ibmcloud.com/vulnerabilities/41801

    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