Sighting correlations

What the source of this sighting of CVE-2021-21087 filed sightings of.

Source: https://vulnerability.circl.lu/known-exploited-vulnerabilities-catalog/59de2fc8-5457-4041-b48f-db27edd5d234

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.