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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, 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

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

Remediation

No remediation recorded yet.

Metrics

Weaknesses (0)

No CWE recorded.

References (6)

Change history (0)

No recorded changes yet.

Sources
CVE.org / MITRE
Status PUBLISHED
Assigner mitre
Published Oct 23, 2007
Updated Aug 7, 2024
Reserved Oct 23, 2007
Link CVE-2007-5633
CISA Vulnrichment
Updated n/a
NVD
Status Modified
Modified Jun 16, 2026
Link CVE-2007-5633
Red Hat
Severity n/a
Public date n/a
Links CVE-2007-5633