What’s Vulnerable › Vulnerabilities

CVE-2007-5633

• Severity: high (CVSS 7.2 v2.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.9% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2007-10-23 · updated 2026-06-16

Description

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.

Affected products

• Almico Speedfan: 4.33

References

• http://osvdb.org/41842
• http://secunia.com/advisories/27312
• http://www.bugtrack.almico.com/view.php?id=987
• http://www.reversemode.com/index.php?option=com_content&task=view&id=42&Itemid=1
• http://www.securityfocus.com/bid/26123
• https://exchange.xforce.ibmcloud.com/vulnerabilities/37298
• http://osvdb.org/41842
• http://secunia.com/advisories/27312
• http://www.bugtrack.almico.com/view.php?id=987
• http://www.reversemode.com/index.php?option=com_content&task=view&id=42&Itemid=1
• http://www.securityfocus.com/bid/26123
• https://exchange.xforce.ibmcloud.com/vulnerabilities/37298

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