CVE-2007-5633

CVE-2007-5633 describes a local privilege escalation vulnerability in SpeedFan 4.33 on Microsoft Windows Vista x64. The flaw allows local users to read or write arbitrary Model Specific Registers (MSRs) via specific IOCTLs to the speedfan.sys driver, enabling them to gain privileges and load unsigned drivers. With a CVSS score of 7.2, this vulnerability is considered high severity, requiring local access but having low attack complexity, leading to complete confidentiality, integrity, and availability impacts. While there is no evidence of active exploitation or Metasploit/Nuclei modules, an exploit is available on ExploitDB, though community discussion and media coverage are minimal.