Reference page — cumulative record through Monday, October 5, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.

CVE-2021-21551

CVE-2021-21551HIGH

Dell dbutil Driver

  AV  AC  PR  UI  S  C  I  A   CVSS    EPSS   %ile   KEV
   L   L   L   N  C  H  H  H    8.8   .7925   99.6   YES

AFFECTED
  Product  Versions  Fixed
  dbutil   2.3 –     —

TIMELINE
  Jan 4   Reserved by dell
  May 4   Published (CNA: dell)
  Mar 31  Added to CISA KEV, remediation due 2022-04-21

CWE-782 · CNA: dell · CVSS v3.1 · 4 references · KEV due April 21, 2022

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.

Lifecycle

Complete event history — 3 events, chronological
Date	Event	Detail
January 4, 2021	Reserved	Reserved by dell
May 4, 2021	Published	Published (CNA: dell)
March 31, 2022	KEV ADDED	Added to CISA KEV, remediation due 2022-04-21

Affected

Affected products and packages — 1 row
Vendor	Product / Package	Ecosystem	Version introduced	Fixed
Dell	dbutil	—	2.3	—

Weaknesses

CWE-782

References (4)

http://packetstormsecurity.com/files/162604/Dell-DBUtil_2_3.sys-IOCTL-Memory-Read-Write.html [x_refsource_MISC]
http://packetstormsecurity.com/files/162739/DELL-dbutil_2_3.sys-2.3-Arbitrary-Write-Privilege-Escalation.html [x_refsource_MISC]
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21551 [government-resource]
https://www.dell.com/support/kbdoc/en-us/000186019/dsa-2021-088-dell-client-platform-security-update-for-dell-driver-insufficient-access-control-vulnerability [x_refsource_MISC]

Authoritative record: CVE-2021-21551 at cve.org

Vendors: dell

Weaknesses: CWE-782

About this page

This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2021-21551 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Monday, October 5, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.