Sighting correlations

What the source of this sighting of CVE-2021-40539 filed sightings of.

Source: https://vulnerability.circl.lu/known-exploited-vulnerabilities-catalog/8508942b-79d8-4da0-a346-2f0b462d1a43

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.