High severity7.2NVD Advisory· Published Mar 25, 2020· Updated Jun 17, 2026
CVE-2019-7240
CVE-2019-7240
Description
An issue was discovered in WinRing0x64.sys in Moo0 System Monitor 1.83. The vulnerable driver exposes a wrmsr instruction via IOCTL 0x9C402088 and does not properly filter the Model Specific Register (MSR). Allowing arbitrary MSR writes can lead to Ring-0 code execution and escalation of privileges.
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Affected products
1- Moo0 System Monitor/WinRing0x64.sysdescription
Patches
Vulnerability mechanics
References
1- github.com/fireeye/Vulnerability-Disclosures/blob/master/FEYE-2019-0004/FEYE-2019-0004.mdnvdExploitThird Party Advisory
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