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    CVE-2007-5633

    Speedfan.sys in Alfredo Milani Comparetti SpeedFan 4.33, when used on Microsoft Windows Vista x64, allows local users to read or write arbitrary MSRs, and gain privileges and load unsigned drivers, via the (1) IOCTL_RDMSR 0x9C402438 and (2) IOCTL_WRMSR 0x9C40243C IOCTLs to \Device\speedfan, as demonstrated by an IOCTL_WRMSR action on MSR_LSTAR.

    Published:Oct 23, 2007
    Last Modified:Apr 23, 2026
    EPS:Oct 23, 2007
    EPSS Score:0.00231
    CVSS Score:7.2

    Affected Products

    Vendor
    Almico
    Product
    Speedfan
    Vendor
    Microsoft
    Product
    Windows Vista

    Exploits

    http://www.bugtrack.almico.com/view.php?id=987http://www.securityfocus.com/bid/26123http://www.bugtrack.almico.com/view.php?id=987http://www.securityfocus.com/bid/26123https://www.exploit-db.com/exploits/30681

    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