CVE-2026-4483
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.
Scoring
- Severity
- HIGH
- CVSS base score
- 7
- CVSS 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
- EPSS probability
- 0.30%
- CWE
- CWE-782
- Published
- 2026-04-08
- Last modified
- 2026-04-08
Affected products
- Moxa MxGeneralIo
Weakness type
Related vulnerabilities
- CVE-2026-16003 — Exposed IOCTL with Insufficient Access Control in Armoury Crate driver allows a local user to add...
- CVE-2026-16004 — Exposed IOCTL with Insufficient Access Control in Armoury Crate driver allows a local user to read...
- CVE-2026-75809 — Exposed IOCTL with insufficient access control in ASUS Armoury Crate allows a local user to...
- CVE-2026-80117 — PassMark PerformanceTest, BurnInTest, and OSForensics Arbitrary I/O Port Access via DirectIo64.sys
- CVE-2026-80116 — PassMark PerformanceTest, BurnInTest, and OSForensics Privilege Escalation via DirectIo64.sys IOCTL
- CVE-2026-80115 — PassMark PerformanceTest, BurnInTest, and OSForensics Kernel Crash via DirectIo64.sys MSR Write IOCTL
- CVE-2026-80113 — PassMark PerformanceTest, BurnInTest, and OSForensics Arbitrary Bit Clear via DirectIo64.sys IOCTL
- CVE-2019-25764 — **UNSUPPORTED WHEN ASSIGNED** Exposed IOCTL with Insufficient Access Control in the ASUS AURA SYNC...