CVE-2026-4483

Exposed IOCTL in MxGeneralIo Utility Enables Privilege Escalation and DoS

Published Apr 8, 2026 CVSS 4.0 · 7 High EPSS < 1% KEV · Not listed
Description
An exposed IOCTL with an  insufficient access control vulnerability has been identified in the utility, MxGeneralIo, for Moxa’s industrial x86 computers. The affected utility, MxGeneralIo, exposes IOCTL methods that permit direct read and write access to MSR and system memory. A local attacker with high privileges could abuse these interfaces to perform unauthorized operations. Successful exploitation may result in privilege escalation on Windows 7 systems or cause a system crash (BSoD) on Windows 10 and 11 systems, leading to a denial-of-service condition. The vulnerability could slightly affect the confidentiality and integrity of the device, but availability might be heavily impacted. No impact to the subsequent system has been identified.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Exposed IOCTL in MxGeneralIo Utility Enables Privilege Escalation and DoS
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description An exposed IOCTL with an  insufficient access control vulnerability has been identified in the utility, MxGeneralIo, for Moxa’s industrial x86 computers. The affected utility, MxGeneralIo, exposes IOCTL methods that permit direct read and write access to MSR and system memory. A local attacker with high privileges could abuse these interfaces to perform unauthorized operations. Successful exploitation may result in privilege escalation on Windows 7 systems or cause a system crash (BSoD) on Windows 10 and 11 systems, leading to a denial-of-service condition. The vulnerability could slightly affect the confidentiality and integrity of the device, but availability might be heavily impacted. No impact to the subsequent system has been identified.
First Time appeared Moxa
Moxa mxgeneralio
Weaknesses CWE-782
CPEs cpe:2.3:a:moxa:mxgeneralio:*:*:windows_10:*:*:*:*:*
cpe:2.3:a:moxa:mxgeneralio:*:*:windows_11:*:*:*:*:*
cpe:2.3:a:moxa:mxgeneralio:*:*:windows_7_x64:*:*:*:*:*
cpe:2.3:a:moxa:mxgeneralio:*:*:windows_7_x86:*:*:*:*:*
Vendors & Products Moxa
Moxa mxgeneralio
References
Metrics cvssV4_0

{'score': 7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Moxa
Published
Updated
Apr 8, 2026, 1:53 PM
Reserved
Mar 20, 2026, 6:25 AM
Status
Awaiting Analysis
Published
Apr 8, 2026, 8:16 AM
Modified
Jul 24, 2026, 8:10 PM