# Total vulnerable devices for known exploited vulnerabilities from CISA
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## Defender XDR
```KQL
let KnowExploitesVulnsCISA = externaldata(cveID: string, vendorProject: string, product: string, vulnerabilityName: string, dateAdded: datetime, shortDescription: string, requiredAction: string, dueDate: datetime, notes: string)[@"https://www.cisa.gov/sites/default/files/csv/known_exploited_vulnerabilities.csv"] with (format="csv", ignoreFirstRecord=True);
DeviceTvmSoftwareVulnerabilities
| join kind=inner KnowExploitesVulnsCISA on $left.CveId == $right.cveID
| summarize TotalVulnerableDevices = count(), DeviceList = make_set(DeviceName), Description = make_set(shortDescription) by cveID
| sort by TotalVulnerableDevices
```