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CVE-2007-5633

7.2 · HIGH

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,…

Published Oct 23, 2007microsoftEPSS 0.94%

Overview

CVE-2007-5633 is a high-severity vulnerability affecting microsoft windows_vista. It was published on October 23, 2007 and has a CVSS 2.0 base score of 7.2 (HIGH).

This vulnerability has a CVSS 2.0 base score of 7.2, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

Technical 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.

Remediation

Check the references section for vendor advisories and patches from microsoft. Update windows_vista to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus

References

Refosvdb.org/41842Refsecunia.com/advisories/27312Refwww.bugtrack.almico.com/view.php?id=987Refwww.reversemode.com/index.php?option=com_content&task=view&id=42&Itemid=1Refwww.securityfocus.com/bid/26123Refexchange.xforce.ibmcloud.com/vulnerabilities/37298Refosvdb.org/41842Refsecunia.com/advisories/27312Refwww.bugtrack.almico.com/view.php?id=987Refwww.reversemode.com/index.php?option=com_content&task=view&id=42&Itemid=1

How CyberStrike helps

Frequently asked questions

What is CVE-2007-5633?

CVE-2007-5633 is a high-severity vulnerability affecting microsoft windows_vista. It was published on October 23, 2007 and has a CVSS 2.0 base score of 7.2 (HIGH).

How severe is CVE-2007-5633?

This vulnerability has a CVSS 2.0 base score of 7.2, rated HIGH. It requires local or adjacent network access to exploit. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-2007-5633?

Check the references section for vendor advisories and patches from microsoft. Update windows_vista to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-2007-5633?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-2007-5633 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.

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