CVE-2007-5634

Speedfan.sys in Alfredo Milani Comparetti SpeedFan 4.33, when used on Microsoft Windows Vista x64, does not properly check a buffer during an IOCTL 0x9c402420 call, which allows local users to cause a denial of service (machine crash) and possibly gain privileges via unspecified vectors.

CVSS 4.9 · Medium

External lookup

Potential internet exposure

Potential exposure only — not proof of vulnerability.Shodan results indicate potentially internet-exposed products, not confirmed vulnerable systems. They do not confirm that any returned system is vulnerable to CVE-2007-5634.

Product-level CPE searches intentionally omit version fields and NVD version-range or configuration certainty. Verify the exact product version and configuration independently.

Sign-in required. Shodan requires you to sign in to run these filter searches.

Product CPE queries

Derived from this CVE's existing NVD CPE 2.3 records; the application, operating-system, or hardware part is retained.

cpe:2.3:a:almico:speedfanSearch this product on Shodan
cpe:2.3:o:microsoft:windows_vistaSearch this product on Shodan

Exact CVE query

Eligible paid Shodan plan required

Shodan's exact vuln: filter is separate from the product searches above and requires an eligible paid Shodan plan.

vuln:CVE-2007-5634Search this CVE on Shodan

These are outbound search links only. cvebuzz makes no Shodan API call, uses no Shodan API key, and does not display live result counts.

Metadata

Canonical fields

NVD status

Unavailable

Published

Oct 23, 2007

Modified

Jun 16, 2026

Official record

Authoritative NVD record

CVSS vector

AV:L/AC:L/Au:N/C:N/I:N/A:C

CWE IDs

Vendor classifications

How this vector reads

CVSS 2.0 base metrics decoded below. This explanation does not recalculate or change the NVD score.

Access Vector (AV): Local. The attacker needs local access to the vulnerable system.
Access Complexity (AC): Low. No special conditions beyond the attacker-controlled steps are required.
Authentication (Au): None. The attacker does not need to authenticate.
Confidentiality Impact (C): None. There is no impact to this security property.
Integrity Impact (I): None. There is no impact to this security property.
Availability Impact (A): Complete. There is a total impact to this security property.

Signals

Exploitation indicators

0 stored signals · no KEV · 0 OTX pulses