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.

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Exploitation none

Automatable no

Technical Impact partial

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
ASRock ASRock Polychrome SYNC/RGB for MB unaffected
Version Status Constraints
0 affected ≤ 1.0.118
ASRock ASRock Polychrome SYNC/RGB for VGA unaffected
Version Status Constraints
0 affected ≤ 2.0.219

No data.

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Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

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

Workaround

No workaround given by the vendor.

References
Link Providers
https://www.twcert.org.tw/en/cp-139-11204-6b1c6-2.html cve-icon cve-icon
https://www.twcert.org.tw/tw/cp-132-11205-f6677-1.html cve-icon cve-icon
History

Mon, 14 Sep 2026 12:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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

Mon, 14 Sep 2026 10:45:00 +0000

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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: twcert

Published:

Updated: 2026-09-14T11:19:45.358Z

Reserved: 2026-09-14T08:55:02.582Z

Link: CVE-2026-90891

cve-icon Vulnrichment

Updated: 2026-09-14T11:13:37.321Z

cve-icon NVD

Status : Received

Published: 2026-09-14T11:17:07.643

Modified: 2026-09-14T12:17:51.537

Link: CVE-2026-90891

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses