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This query was originally published in the threat analytics report, Multiple EOP flaws in Dell driver (CVE-2021-21551). CVE-2021-21551 is a vulnerability found in dbutil_2_3.sys, a driver distributed with Dell firmware updates and tools. Attackers can exploit this vulnerability to escalate privileges on a compromised device. The following query can detect if the affected driver has been added to a device's \temp folders. Reference - https://nvd.nist.gov/vuln/detail/CVE-2021-21551
| Attribute | Value |
|---|---|
| Type | Hunting Query |
| Solution | GitHub Only |
| ID | 4eadcfeb-2ed8-40ce-941a-6691d7ddbdca |
| Tactics | Privilege escalation |
| Required Connectors | MicrosoftThreatProtection |
| Source | [View on GitHub](https://github.com/Azure/Azure-Sentinel/blob/master/Hunting Queries/Microsoft%20365%20Defender/Privilege%20escalation/dell-driver-vulnerability-2021.yaml) |
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