Insufficient Access Control Vulnerability in Moxa’s Industrial x86 Computers

CVE-2026-4483

What is CVE-2026-4483?

An exposed IOCTL vulnerability has been found in the MxGeneralIo utility for Moxa’s industrial x86 computers, which allows high-privileged local attackers to execute unauthorized operations. This vulnerability permits direct read and write access to MSR and system memory, with the potential for privilege escalation on Windows 7 systems. On Windows 10 and 11, successful exploitation could lead to system crashes, resulting in a denial-of-service condition. While the vulnerability has a minimal impact on confidentiality and integrity, it significantly compromises availability.

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