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Dell dbutil_2_3.sys driver contains an insufficient access control vulnerability which may lead to escalation of privileges, denial of service, or information disclosure. Local authenticated user access is required.
Use CWE-782, Dell vendor hub and Dbutil product page to widen CVE-2021-21551 into its surrounding weakness, vendor, and product context.
Additional editorial context is available in The Weekly Cybersecurity Brief: February 27th, 2026.