CPUID up to 1.0.5.4 cpuz.sys stack-based overflow

Summaryinfo

A vulnerability, which was classified as critical, was found in CPUID up to 1.0.5.4. This impacts an unknown function in the library cpuz.sys. Such manipulation leads to stack-based overflow. This vulnerability is documented as CVE-2025-51060. There is not any exploit available.

Detailsinfo

A vulnerability was found in CPUID up to 1.0.5.4 and classified as critical. Affected by this issue is some unknown functionality in the library cpuz.sys. The manipulation with an unknown input leads to a stack-based overflow vulnerability. Using CWE to declare the problem leads to CWE-121. A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function). Impacted is confidentiality, integrity, and availability. CVE summarizes:

An issue was discovered in CPUID cpuz.sys 1.0.5.4. An attacker can use DeviceIoControl with the unvalidated parameters 0x9C402440 and 0x9C402444 as IoControlCodes to perform RDMSR and WRMSR, respectively. Through this process, the attacker can modify MSR_LSTAR and hook KiSystemCall64. Afterward, using Return-Oriented Programming (ROP), the attacker can manipulate the stack with pre-prepared gadgets, disable the SMAP flag in the CR4 register, and execute a user-mode syscall handler in the kernel context. It has not been confirmed whether this works on 32-bit Windows, but it functions on 64-bit Windows if the core isolation feature is either absent or disabled.

This vulnerability is handled as CVE-2025-51060 since 06/16/2025. The exploitation is known to be easy. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 10/10/2025).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-23645). If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Name

• CPUID

Version

• 1.0.5.0
• 1.0.5.1
• 1.0.5.2
• 1.0.5.3
• 1.0.5.4

CPE 2.3info

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CPE 2.2info

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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