Sighting correlations

What the source of this sighting of CVE-2021-21220 filed sightings of.

Source: https://vulnerability.circl.lu/known-exploited-vulnerabilities-catalog/7456aa34-000a-4d6a-986c-5b94a44a4065

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.