Sighting correlations

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

Source: https://vulnerability.circl.lu/known-exploited-vulnerabilities-catalog/46eddd99-8683-4470-a3a7-db6031117c75

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.