CVE-2023-1676Public exploit

Kernel code execution via user-accessible writemsr IOCTL

Published Mar 28, 2023 · Updated Feb 12, 2025

Memory corruption in Driver Genius 9.70.0.346 allows local users to execute arbitrary code in the Windows kernel through a driver IOCTL. The mydrivers64.sys handler for IOCTL 0x9C402088 permits a normal user to invoke __writemsr, writing a model-specific register without restricting the operation to trusted callers. Local code execution is required, and successful exploitation grants kernel-level execution that can fully compromise the host.

CVSS severity7.8
High
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Memory corruption in Driver Genius 9.70.0.346 allows local users to execute arbitrary code in the Windows kernel through a driver IOCTL. The mydrivers64.sys handler for IOCTL 0x9C402088 permits a normal user to invoke __writemsr, writing a model-specific register without restricting the operation to trusted callers. Local code execution is required, and successful exploitation grants kernel-level execution that can fully compromise the host.

The record

CVE
CVE-2023-1676
Published
Mar 28, 2023
Updated
Feb 12, 2025
Vendor
Driver-Soft Inc.
Product
Driver Genius
Classifications
CWE-119, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Mar 28, 2023CVE publishedPublication date reported by the CVE source.
  2. Feb 12, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=9.70.0.346

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Driver-Soft Inc. · Driver Geniusversion=9.70.0.346

Published CVSS scores

6.8VulDBAV:L/AC:L/Au:S/C:C/I:C/A:C
7.8VulDBCVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8VulDBCVSS:3.1/AV:L/AC:L/PR:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1068Exploitation for Privilege Escalation

Public exploit references

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

Technologies

Your stack

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo