Coverage › CVE-2021-21551
CVE-2021-21551 Unmapped
Dell dbutil Driver Insufficient Access Control Vulnerability
- Vendor / product
- Dell — dbutil Driver
- Description (CISA)
- Dell dbutil driver contains an insufficient access control vulnerability which may lead to escalation of privileges, denial-of-service (DoS), or information disclosure.
- Added to KEV
- 2022-03-31
- Due date
- 2022-04-21
- Required action
- Apply updates per vendor instructions.
- Known ransomware use
- Unknown
- CWE
- CWE-782
- CISA notes
- https://nvd.nist.gov/vuln/detail/CVE-2021-21551
- Elsewhere
- cve.org · NVD · CISA KEV · JSON
ATT&CK techniques
No public source states how this vulnerability is exploited in ATT&CK terms.
The only authoritative CVE → ATT&CK mapping in the open — CTID's Mappings Explorer, pinned to a KEV snapshot of 2025-07-28 and ATT&CK 16.1 — does not include CVE-2021-21551. CISA's catalogue carries no technique field. kevmap does not infer techniques from the CWE (CWE-782) — here is why — and does not guess.
This page will change state automatically if a mapping is published. What is shown above is everything CISA publishes about the entry.
Sigma rules tagged with this CVE
1 rule in SigmaHQ carries the tag cve.2021-21551. These are shown as detection content for the CVE itself. Their ATT&CK tags are deliberately not rendered here: a rule author's tag is not an authoritative statement of how the vulnerability is exploited, and this page does not show techniques for unmapped entries.