Sighting correlations

What the source of this sighting of CVE-2021-21193 filed sightings of.

Source: https://vulnerability.circl.lu/known-exploited-vulnerabilities-catalog/04ad8abe-86a6-4dd1-a82b-069bd507e6c7

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.