CVE WatchJul 24, 2026

CVE-2026-4483

An exposed IOCTL with an insufficient access control vulnerability has been identified in the utility, MxGeneralIo, for Moxa’s industrial x

CVSS

—

No CVSS

EPSS

0.3%

p22

KEV

—

Exploit Today

0-100

Published: Apr 8, 2026 · Last modified: Jul 24, 2026 · CWE-782

EPSS · 30d

0.3%EPSS · 30 days0.3%

2026-08-122026-09-09

Technical 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.

Official references

www.moxa.comhttps://www.moxa.com/en/support/product-support/security-advisory/mpsa-254811-cve-2026-4483-exposed-ioctl-with-insufficient-access-control-vulnerability-in-the-utility-for-x86-computers

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