Sighting correlations

What the source of this sighting of CVE-2019-1821 filed sightings of.

Source: https://vulnerability.circl.lu/known-exploited-vulnerabilities-catalog/8fb7836a-e79a-4df2-ba48-e3bec4569c5b

Drag nodes to arrange them. Double-click a vulnerability to open it. The Physics button on the left tunes the layout and the simulation; the legend at the bottom left hides or shows vulnerabilities by sighting type.