High severity · published May 4, 2021
CVE-2021-21551
Dell dbutil Driver Insufficient Access Control Vulnerability
In wildKEV
7.8
CVSS
79.6%
EPSS
Yes
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)79.6% · higher than 100% of CVEs
Exploited in the wildYes
CISA KEVListed Mar 31, 2022
Federal remediation dueApr 21, 2022
Ransomware campaign useNot known
Affected products
Which versions
DB
dbutil · Dell
2.3 · source: vendor, NVD
DD
dbutil Driver · Dell
All versions, or not specified · source: KEV
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21551
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-21551
CISA KEV catalogue
https://www.cisa.gov/known-exploited-vulnerabilities-catalog
x_refsource_MISC
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
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