CVE-2017-15303
CVE-2017-15303 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. The underlying weakness is classified as CWE-787.
Key facts
- Severity: High (CVSS 3.x base score 7.8)
- CVSS v2: 4.3
- EPSS exploit prediction: 2% (72nd percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-787
- Affected product: Cpuid Cpu-z
- Published:
- Last modified:
Description
In CPUID CPU-Z before 1.43, there is an arbitrary memory write that results directly in elevation of privileges, because any program running on the local machine (while CPU-Z is running) can issue an ioctl 0x9C402430 call to the kernel-mode driver (e.g., cpuz141_x64.sys for version 1.41).
Frequently asked questions
- What is CVE-2017-15303?
- In CPUID CPU-Z before 1.43, there is an arbitrary memory write that results directly in elevation of privileges, because any program running on the local machine (while CPU-Z is running) can issue an ioctl 0x9C402430 call to the kernel-mode driver (e.g., cpuz141_x64.sys for version 1.41).
- How severe is CVE-2017-15303?
- CVE-2017-15303 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-2017-15303 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (72nd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2017-15303?
- CVE-2017-15303 affects Cpuid Cpu-z. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2017-15303?
- 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-2017-15303 published?
- CVE-2017-15303 was published on 2017-10-16 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:cpuid:cpu-z:*:*:*:*:*:windows:*:*
More vulnerabilities in Cpuid Cpu-z
- CVE-2017-15302 — High (CVSS 7.8): In CPUID CPU-Z through 1.81, there are improper access rights to a kernel-mode driver (e.g., cpuz143_x64.sys for…
- 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…
All CVEs affecting Cpuid Cpu-z →
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