Sighting correlations

What the source of this sighting of CVE-2021-21224 filed sightings of.

Source: https://vulnerability.circl.lu/known-exploited-vulnerabilities-catalog/a07df2dc-7fdc-45c7-a08c-b415e537fc9e

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.