CVE-2026-90891— ASRock｜ASRock Polychrome SYNC/RGB software utility - Improper Access Control
Quick assessment
Affected
ASRock ASRock Polychrome SYNC/RGB for MB
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.
ASRock 公司开发的 ASRock Polychrome SYNC/RGB 软件工具存在一个不当访问控制漏洞。经过身份验证的本地攻击者可以通过发送特制的 IOCTL 请求，诱导驱动程序向未充分限制输入/输出端口进行写入操作，从而导致操作系统强制重启。
Possible ATT&CK Techniques 3 AI
T1069.002 · Domain Groups T1190 · Exploit Public-Facing Application T1069 · Permission Groups DiscoveryAffected Version Matrix 2
| Vendor | Product | Version Range | Status |
|---|---|---|---|
| ASRock | ASRock Polychrome SYNC/RGB for MB | ≤ 1.0.118 |
affected |
| ASRock | ASRock Polychrome SYNC/RGB for VGA | ≤ 2.0.219 |
affected |
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I. Basic Information for CVE-2026-90891
Vulnerability Information
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Vulnerability Title
ASRock｜ASRock Polychrome SYNC/RGB software utility - Improper Access Control
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
CWE-1256
Source: CVE Program / CVE List V5
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| ASRock | ASRock Polychrome SYNC/RGB for MB | 0 ~ 1.0.118 | - |
|
| ASRock | ASRock Polychrome SYNC/RGB for VGA | 0 ~ 2.0.219 | - |
|
II. Public POCs for CVE-2026-90891
| # | POC Description | Source Link | Shenlong Link |
|---|
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Vendor Advisories for CVE-2026-90891 (2)
IV. Related Vulnerabilities
V. Comments for CVE-2026-90891
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