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Description

The MBStorage DRAM lighting control module within Gigabyte Control Center (GCC) developed by GIGABYTE Technology has an Improper Access Control vulnerability. Authenticated local attackers can send specific IOCTL commands through the driver MyPortIO_x64.sys bundled with the module, thereby arbitrarily reading and writing physical memory and obtaining kernel-level privileges.

PUBLISHED Reserved 2026-05-25 | Published 2026-07-13 | Updated 2026-07-14 | Assigner twcert




HIGH: 8.5CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N

HIGH: 7.8CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Problem types

CWE-782 Exposed IOCTL with insufficient access control

Product status

Default status
unaffected

Any version
affected

References

www.twcert.org.tw/tw/cp-132-11033-97316-1.html third-party-advisory

www.twcert.org.tw/en/cp-139-11034-f7f2f-2.html third-party-advisory

cve.org (CVE-2026-9492)

nvd.nist.gov (CVE-2026-9492)

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