Sighting correlations

What the source of this sighting of CVE-2017-7921 filed sightings of.

Source: https://db.gcve.eu/known-exploited-vulnerabilities-catalog/50e65a03-c8d1-4f51-bfc4-16b8751aedc4

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.