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CVE-2019-7240

HIGHCVSS 7.2/10EPSS 2.39%

Last modified

CVE-2019-7240 is a high-severity vulnerability rated 7.2/10 on the CVSS scale. 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). EPSS estimates a 2.39% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
7.2/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

EPSS Probability
2.39%

81.9th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
Moo0System Monitor1.83

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2019-7240?
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.
How severe is CVE-2019-7240?
CVE-2019-7240 has a CVSS score of 7.2/10 (HIGH severity). The EPSS model estimates a 2.39% probability of exploitation in the next 30 days.
How do I fix CVE-2019-7240?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2019-7240?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST