CVE-2026-90891: CWE-1256 Improper Restriction of Software Interfaces to Hardware in ASRock ASRock Polychrome SYNC/RGB for MB
ASRock Polychrome SYNC/RGB software utility developed by ASRock Inc. has an Improper Access Control vulnerability. Authenticated local attackers can send a specially crafted IOCTL request to cause the driver to write to improperly restricted I/O ports, resulting in a forced operating system reboot.
CVE-2026-90891: CWE-1256 Improper Restriction of Software Interfaces to Hardware in ASRock ASRock Polychrome SYNC/RGB for MB
Description
ASRock Polychrome SYNC/RGB software utility developed by ASRock Inc. has an Improper Access Control vulnerability. Authenticated local attackers can send a specially crafted IOCTL request to cause the driver to write to improperly restricted I/O ports, resulting in a forced operating system reboot.
CVSS v4.0
Score 6.8medium
Affected software
ASRock
ASRock Polychrome SYNC/RGB for MB
ASRock
ASRock Polychrome SYNC/RGB for VGA
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- twcert
- Date Reserved
- 2026-09-14T08:55:02.582Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6aa7d0a855bf5e2cf5ee39c8
Added to database: 09/14/2026, 10:47:04 UTC
Last updated: 09/14/2026, 10:47:04 UTC
Views: 1
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