{"answers":{"affected":"","exploited":"There is no known exploitation of CVE-2026-90891 in the wild and no public exploit code.","fix":"No fix has been published for CVE-2026-90891 yet. Limit exposure of the affected software until one is available.","what":"CVE-2026-90891 is a medium-severity missing authorization vulnerability in ASRock Polychrome SYNC/RGB for MB, published on 14 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-90891 and fix it if it is affected.\n\nWhat it is: CVE-2026-90891 is a medium-severity missing authorization vulnerability in ASRock Polychrome SYNC/RGB for MB, published on 14 Sep 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-90891 in the wild and no public exploit code.\n\nAffected product: ASRock Polychrome SYNC/RGB for MB. No package-level version data is available, so check the vendor advisory linked from the reference page.\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-90891/ (Markdown: https://insights.sbomify.com/CVE-2026-90891/index.md)","id":"CVE-2026-90891","markdown":"https://insights.sbomify.com/CVE-2026-90891/index.md","name":"CVE-2026-90891","record":{"aliases":["GHSA-g9vq-5jvw-3c63"],"analysis":{"component_type":"desktop_application","fix_type":"no_fix_stated","impacts":["denial_of_service"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"ASRock RGB utility","requires_auth":"low_privilege","summary":"Local attackers can trigger a system reboot by sending crafted IOCTL requests to the ASRock Polychrome SYNC/RGB driver due to improper access control.","user_interaction":"not_required","vuln_class":"missing_authorization"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"twcert","cpe":[],"cvss":{"score":6.8,"severity":"medium","source":"cna","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","version":"4.0"},"cwes":[{"id":"CWE-1256","name":"Improper Restriction of Software Interfaces to Hardware Features"}],"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.","ecosystems":[],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":null,"headline":"ASRock｜ASRock Polychrome SYNC/RGB software utility - Improper Access Control","id":"CVE-2026-90891","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":null,"product":null,"products":[],"type":"missing_authorization","year":"2026"},"n_packages":0,"n_references":2,"next":{"headline":"MISP UserSettingsController CSRF Protection Bypass on setTheme, setHomePage, and eventIndexColumnToggle Endpoints","id":"CVE-2026-90893"},"packages":[],"prev":{"headline":"ASRock｜ASRock Polychrome SYNC/RGB software utility - Untrusted Pointer Dereference","id":"CVE-2026-90890"},"products":["ASRock Polychrome SYNC/RGB for MB","ASRock Polychrome SYNC/RGB for VGA"],"published":"2026-09-14","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-09-14","vendors":["ASRock"]},"summary":"Local attackers can trigger a system reboot by sending crafted IOCTL requests to the ASRock Polychrome SYNC/RGB driver due to improper access control.","url":"https://insights.sbomify.com/CVE-2026-90891/"}