CVE-2026-90891

ASRock|ASRock Polychrome SYNC/RGB software utility - Improper Access Control

Published Sep 14, 2026 CVSS 4.0 · 6.8 Medium EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Solution

Update ASRock Polychrome SYNC/RGB for MB to a version later than 1.0.118 Update ASRock Polychrome SYNC/RGB for VGA to a version later than 2.0.219

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Asrock
Asrock asrock Polychrome Sync/rgb For Mb
Asrock asrock Polychrome Sync/rgb For Vga
Vendors & Products Asrock
Asrock asrock Polychrome Sync/rgb For Mb
Asrock asrock Polychrome Sync/rgb For Vga
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title ASRock|ASRock Polychrome SYNC/RGB software utility - Improper Access Control
Weaknesses CWE-1256
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 6.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
twcert
Published
Updated
Sep 14, 2026, 11:19 AM
Reserved
Sep 14, 2026, 8:55 AM
Status
Deferred
Published
Sep 14, 2026, 11:17 AM
Modified
Sep 18, 2026, 7:15 PM