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    CVE-2009-2069

    Microsoft Internet Explorer before 8 displays a cached certificate for a (1) 4xx or (2) 5xx CONNECT response page returned by a proxy server, which allows man-in-the-middle attackers to spoof an arbitrary https site by letting a browser obtain a valid certificate from this site during one request, and then sending the browser a crafted 502 response page upon a subsequent request.

    Published:Jun 15, 2009
    Last Modified:Apr 23, 2026
    EPS:Jun 15, 2009
    EPSS Score:0.022
    CVSS Score:5.8

    Affected Products

    Vendor
    Microsoft
    Product
    Ie
    Vendor
    Microsoft
    Product
    Internet Explorer

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-287 Improper Authentication

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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