CVE-2007-5633: n/a vulnerability

CVE-2007-5633: Speedfan.sys in Alfredo Milani Comparetti SpeedFan 4.33, when used on Microsoft Windows Vista x64, allows l...

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.

UnknownCVSS not scoredNot KEV-listedUpdatedAug 7, 2024, 15:39 UTC (UTC+00:00)

Security readout for executives and security teams

CVE-2007-5633 is a local privilege escalation issue in SpeedFan 4.33 on Windows Vista x64. If the vulnerable speedfan.sys driver is present, a local user could abuse exposed driver controls to gain higher privileges or load unsigned drivers. This is mainly a legacy endpoint risk, not a remote network vulnerability. Exposure is most likely limited to legacy Microsoft Windows Vista x64 systems running Alfredo Milani Comparetti SpeedFan 4.33 with speedfan.sys loaded. The provided affected-product metadata is incomplete, so do not assume other versions or platforms without vendor or advisory confirmation. Prioritize this for legacy endpoint cleanup, especially where Vista x64 systems still support sensitive operations. It is not presented as internet-exploitable, but the impact is serious once local access exists because it can undermine kernel security controls. Mitigation focus: Inventory systems for SpeedFan 4.33 on Windows Vista x64.; Remove SpeedFan 4.33 where operationally unnecessary.; Check vendor bug tracker and advisories for fixed or safe versions..

Prepared: Jun 29, 2026, 02:08 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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Vulnerability profileCVE Program record

Severity: Unknown
CVSS: Not scored
Known Exploited: No
Published: Oct 23, 2007, 17:00 UTC (UTC+00:00)

Official CVE source material

CNA and ADP enrichment extracted from CVE v5

These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.

0CVSS vectors

0Timeline events

0ADP providers

2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

CVE List V5 sourceCVE List V5
speedfan-ioctl-privilege-escalation(37298)CVE reference · vdb-entry, x_refsource_XF

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus

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Weakness

CWE details

No CWE listed

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