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    CVE-2009-4171

    An ActiveX control in YahooBridgeLib.dll for Yahoo! Messenger 9.0.0.2162, and possibly other 9.0 versions, allows remote attackers to cause a denial of service (NULL pointer dereference and application crash) by calling the RegisterMe method with a long argument.

    Published:Dec 2, 2009
    Last Modified:Apr 23, 2026
    EPS:Dec 2, 2009
    EPSS Score:0.03149
    CVSS Score:4.3

    Affected Products

    Vendor
    Yahoo
    Product
    Messenger

    Exploits

    http://www.securityfocus.com/bid/37007http://www.securityfocus.com/bid/37007https://www.exploit-db.com/exploits/33350https://www.exploit-db.com/exploits/10092

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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