SARA / Free Tools / KEV / CVE-2021-21551

CVE-2021-21551 on CISA KEV

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.

CISA KEV — Actively Exploited

Dell dbutil Driver Insufficient Access Control Vulnerability

Vendor / Product
— / Dell / dbutil Driver
Added to KEV
2022-03-31
BOD 22-01 due
2022-04-21
Ransomware use
Unknown
CVSS / EPSS
8.8 HIGH · EPSS 56.95%

01What CISA says about this vulnerability

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.

02Required action — verbatim from CISA

Apply updates per vendor instructions.

03Notes & references

04SARA's analyst layer — why this matters

This vulnerability is currently on the CISA KEV list, which CISA only adds CVEs to when there is reliable evidence of active exploitation in the wild. For federal civilian agencies, BOD 22-01 requires remediation by the due date above. For everyone else, KEV is the strongest "patch immediately" signal you can get from public threat intel.

05Affected products (summary)

VendorProductVersions
Delldbutil2.3

06Detection

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection:

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Programmatic KEV data?
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