Sighting correlations

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

Source: https://db.gcve.eu/known-exploited-vulnerabilities-catalog/61b8d6a8-8044-4846-a3d8-1c9a346e329c

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.