EUVD-2026-20111CVSS 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Lifecycle Timeline
3Description
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.
Analysis
Moxa MxGeneralIo utility versions prior to 1.4.0/1.5.0 expose IOCTL interfaces allowing authenticated high-privilege local attackers to directly access Model-Specific Registers (MSR) and system memory, enabling privilege escalation on Windows 7 or denial-of-service crashes (BSoD) on Windows 10/11. While CVSS 7.0 reflects high availability impact and network attack vector classification, the actual exploit requires local high-privilege access (PR:H), significantly reducing practical risk. …
Sign in for full analysis, threat intelligence, and remediation guidance.
Remediation
Within 24 hours: inventory all systems running Moxa MxGeneralIo and identify deployed versions. Within 7 days: contact Moxa support to confirm availability and obtain patches for versions 1.4.0 or 1.5.0 depending on your current deployment; prioritize Windows 7 systems for immediate remediation. …
Sign in for detailed remediation steps.
Priority Score
Share
External POC / Exploit Code
Leaving vuln.today