Sighting correlations

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

Source: https://vulnerability.circl.lu/known-exploited-vulnerabilities-catalog/9ff1d519-076a-4c98-beb0-2ed1e7764f23

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.