Sighting correlations

What the source of this sighting of CVE-2021-22899 filed sightings of.

Source: https://vulnerability.circl.lu/known-exploited-vulnerabilities-catalog/a16f519f-12f3-480a-834a-27350b682b43

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.