How severe is CVE-2017-15302?

CVE-2017-15302 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2017-15302 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2017-15302?

CVE-2017-15302 affects Cpuid Cpu-z. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2017-15302?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2017-15302 published?

CVE-2017-15302 was published on 2017-10-16 and last updated on 2026-06-17.

CVE-2017-15302

CVE-2017-15302 is a high-severity vulnerability in Cpuid Cpu-z with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 7.2
EPSS exploit prediction: 0% (30th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Cpuid Cpu-z
Published: 2017-10-16
Last modified: 2026-06-17

Description

In CPUID CPU-Z through 1.81, there are improper access rights to a kernel-mode driver (e.g., cpuz143_x64.sys for version 1.43) that can result in information disclosure or elevation of privileges, because of an arbitrary read of any physical address via ioctl 0x9C402604. Any application running on the system (Windows), including sandboxed users, can issue an ioctl to this driver without any validation. Furthermore, the driver can map any physical page on the system and returns the allocated map page address to the user: that results in an information leak and EoP. NOTE: the vendor indicates that the arbitrary read itself is intentional behavior (for ACPI scan functionality); the security issue is the lack of an ACL.

Frequently asked questions

What is CVE-2017-15302?: In CPUID CPU-Z through 1.81, there are improper access rights to a kernel-mode driver (e.g., cpuz143_x64.sys for version 1.43) that can result in information disclosure or elevation of privileges, because of an arbitrary read of any physical address via ioctl 0x9C402604. Any application running on the system (Windows), including sandboxed users, can issue an ioctl to this driver without any validation. Furthermore, the driver can map any physical page on the system and returns the allocated map page address to the user: that results in an information leak and EoP. NOTE: the vendor indicates that the arbitrary read itself is intentional behavior (for ACPI scan functionality); the security issue is the lack of an ACL.
How severe is CVE-2017-15302?: CVE-2017-15302 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2017-15302 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2017-15302?: CVE-2017-15302 affects Cpuid Cpu-z. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2017-15302?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2017-15302 published?: CVE-2017-15302 was published on 2017-10-16 and last updated on 2026-06-17.

References

https://github.com/akayn/Bugs/blob/master/CPUID/CVE-2017-15302/README.md

Affected products (1)

cpe:2.3:a:cpuid:cpu-z:*:*:*:*:*:windows:*:*

More vulnerabilities in Cpuid Cpu-z

CVE-2017-15303 — High (CVSS 7.8): In CPUID CPU-Z before 1.43, there is an arbitrary memory write that results directly in elevation of privileges,…
CVE-2025-65264 — Medium (CVSS 5.5): The kernel driver of CPUID CPU-Z v2.17 and earlier does not validate user-supplied values passed via its IOCTL…

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