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Findings

CVE-2021-21551

Dell dbutil Driver Insufficient Access Control Vulnerability

Published May 4, 2021 · updated Jun 16, 2026 · dell dbutil

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.

Timeline

Detection, updates, and resolution for this record.

  1. May 4, 2021 · Catalog

    Detected

    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.

  2. Mar 31, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Apr 21, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Jun 16, 2026 · Catalog

    Updated

    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.

Required action

Apply updates per vendor instructions.

CISA due date Apr 21, 2022

Affected

  • cpe dell/dbutilversion unspecified
  • vendor Dell dbutil Driverversion unspecified

Sources

  • CISA KEVCVE-2021-21551

    Dell dbutil driver contains an insufficient access control vulnerability which may lead to escalation of privileges, denial-of-service (DoS), or information disclosure.

    cisa.gov
  • CVE.orgCVE-2021-21551

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2021-21551

    30-day exploitation probability 79.2%

    first.org
  • Exploit Database49893

    Public archive entry. The exploit body is not stored here.

    exploit-db.com
  • Metasploit Modulesexploit_windows/local/cve_2021_21551_dbutil_memmove

    Public module reference (good). Module source is not copied into this catalog.

    rapid7.com
  • Metasploit Modulespost_windows/manage/dell_memory_protect

    Public module reference (manual). Module source is not copied into this catalog.

    rapid7.com
  • NIST NVDCVE-2021-21551

    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.

    nvd.nist.gov
  • Packet Storm Securityhttp://packetstormsecurity.com/files/162604/Dell-DBUtil_2_3.sys-IOCTL-Memory-Read-Write.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com
  • Packet Storm Securityhttp://packetstormsecurity.com/files/162739/DELL-dbutil_2_3.sys-2.3-Arbitrary-Write-Privilege-Escalation.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com

References