CVE-2019-7247

Ring-0 code execution via unrestricted MSR writes

Published May 18, 2020 · Updated Aug 4, 2024

Improper MSR access control in AMD OverDrive allows local users to execute arbitrary unsigned code in Ring 0 through AODDriver2.sys. IOCTL 0x81112ee0 exposes wrmsr to user-mode callers without validating the target MSR, allowing the system-call handler to be overwritten. The driver must already be loaded; otherwise administrative rights are required, and successful exploitation yields kernel-level code execution.

CVSS severity9.8
Critical
EPSS probability2.05%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper MSR access control in AMD OverDrive allows local users to execute arbitrary unsigned code in Ring 0 through AODDriver2.sys. IOCTL 0x81112ee0 exposes wrmsr to user-mode callers without validating the target MSR, allowing the system-call handler to be overwritten. The driver must already be loaded; otherwise administrative rights are required, and successful exploitation yields kernel-level code execution.

The record

CVE
CVE-2019-7247
Published
May 18, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 18, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

7.5NIST NVDAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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