What’s Vulnerable › Vulnerabilities

CVE-2026-90891: ASRock｜ASRock Polychrome SYNC/RGB software utility - Improper Access Control

• Severity: medium (CVSS 5.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-14 · updated 2026-09-18
• Weakness: CWE-1256

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.

Affected products

• ASRock Polychrome SYNC/RGB for MB: through 1.0.118
• ASRock Polychrome SYNC/RGB for VGA: through 2.0.219

References

• https://www.twcert.org.tw/en/cp-139-11204-6b1c6-2.html
• https://www.twcert.org.tw/tw/cp-132-11205-f6677-1.html

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