High severity8.8CISA KEVNVD Advisory· Published May 4, 2021· Updated Jun 17, 2026
CVE-2021-21551
CVE-2021-21551
Description
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
4Patches
Vulnerability mechanics
References
4- packetstormsecurity.com/files/162604/Dell-DBUtil_2_3.sys-IOCTL-Memory-Read-Write.htmlnvdExploitThird Party AdvisoryVDB Entry
- packetstormsecurity.com/files/162739/DELL-dbutil_2_3.sys-2.3-Arbitrary-Write-Privilege-Escalation.htmlnvdExploitThird Party AdvisoryVDB Entry
- www.dell.com/support/kbdoc/en-us/000186019/dsa-2021-088-dell-client-platform-security-update-for-dell-driver-insufficient-access-control-vulnerabilitynvdMitigationVendor Advisory
- www.cisa.gov/known-exploited-vulnerabilities-catalognvdUS Government Resource
News mentions
2- UAT-10147 Uses AI to Scale Server Attacks, Deploys SPECTRE With EDR Bypass and Linux RootkitThe Hacker News · Aug 24, 2026
- UAT-10147 deploys SPECTRE: A cross-platform implant with Linux rootkit and BYOVD capabilitiesCisco Talos Intelligence · Aug 20, 2026