CVE-2021-21551
HighPublished
Dell dbutil Driver Insufficient Access Control Vulnerability
- Published
- May 4, 2021
- Updated
- Oct 21, 2025
- Assigning CNA
- dell
- Evidence observed
- May 21, 2021
Primary CVSS
8.8/ 10High
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Dell dbutil Driver Insufficient Access Control Vulnerability
nvd · CVSS 3.1
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:HHigh · next 30 days
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
This CVE appears in the CISA Known Exploited Vulnerabilities catalog.
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.
Proof-of-concept exploit for CVE-2021-21551 targeting Dell's dbutil_2_3 driver to achieve code execution on systems with HVCI disabled.
Dell Driver EoP (CVE-2021-21551)
Proof-of-concept exploit for CVE-2021-21551: Windows local privilege escalation via Dell dbutil_2_3.sys driver. Implements read/write primitives, shellcode allocation, SMEP bypass, and HAL dispatch pointer overwrite.
An extended proof-of-concept for the CVE-2021-21551 Dell ‘dbutil_2_3.sys’ Kernel Exploit
Exploit to SYSTEM for CVE-2021-21551
This repo contain a PoC I have done when blind analysis the dbutil_2_3.sys driver for vulnerability. This was created by personal analysis without looking at writeups or even know which CVE exist in this driver. All the knowledge I have is that this driver is vulnerable in some way.
Proof of concept exploit for CVE-2021-21551
Exploit implementation for CVE-2021-21551
Dell Driver EoP (CVE-2021-21551)
Cobalt Strike (CS) Beacon Object File (BOF) foundation for kernel exploitation using CVE-2021-21551.
Paolo Stagno · windows · May 21, 2021
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