{"id":"CVE-2026-90891","title":"ASRock Polychrome SYNC/RGB software utility developed by ASRock Inc","summary":"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 restri…","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-1256"],"vendor":"ASRock","product":"ASRock Polychrome SYNC/RGB for MB","affected":["polychrome_sync_rgb_for_mb <= 1.0.118","polychrome_sync_rgb_for_vga <= 2.0.219"],"published":"2026-09-14","updated":"2026-09-18","sourceUpdated":"2026-09-18T19:15:11.780","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-90891","references":[{"url":"https://www.twcert.org.tw/en/cp-139-11204-6b1c6-2.html","label":"twcert@cert.org.tw"},{"url":"https://www.twcert.org.tw/tw/cp-132-11205-f6677-1.html","label":"twcert@cert.org.tw"}],"tags":["nvd","cve.org"],"epss":0.00087,"epssPercentile":0.00424,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-14T11:00:18.756782Z"},"ingestedAt":"2026-09-14T15:23:07.462Z","slug":"CVE-2026-90891","body":"## Overview\n\nASRock 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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}