CVE-2021-21551Dell dbutil_2_3.sys driver contains an insufficient access control vulnerability which may lead to escalation of privileges, denial of service, or information disclosure.
Updated under an hour ago ()
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It affects Dell dbutil. Add what you run to find out whether that includes you.
CISA lists it as known exploited since Mar 31, 2022; federal agencies had to remediate by Apr 21, 2022. Treat that date as your deadline.
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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.
- CVSS
- 8.8 HIGH (v3.1, CNA)CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
- Weakness (CWE)
- CWE-782
- Known exploited
- Added to CISA KEV Mar 31, 2022; federal remediation due Apr 21, 2022Apply updates per vendor instructions.
- EPSS (exploitation in the next 30 days)
- 80.06% (percentile 100)
- Assigned by
- dell
- NVD analysis
- Analyzed
- Record last updated
- Oct 21, 2025
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
Dell dbutil dell:dbutil (from the name) | 2.3 | CNA record |
dell dbutil dell:dbutil | through 2.3 | NVD |
References
- https://www.dell.com/support/kbdoc/en-us/000186019/dsa-2021-088-dell-client-platform-security-update-for-dell-driver-insufficient-access-control-vulnerabilityx-refsource-misc, mitigation, vendor-advisory
- http://packetstormsecurity.com/files/162604/Dell-DBUtil_2_3.sys-IOCTL-Memory-Read-Write.htmlx-refsource-misc, exploit, third-party-advisory, vdb-entry
- http://packetstormsecurity.com/files/162739/DELL-dbutil_2_3.sys-2.3-Arbitrary-Write-Privilege-Escalation.htmlx-refsource-misc, exploit, third-party-advisory, vdb-entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-21551us-government-resource
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.