This was not flagged as a 0 day exploit but Microsoft have confirmed there is critical severity level with this vulnerability of 9.8 and released it in their patch Tuesday roll-out.
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-43468
More news here:
https://www.forbes.com/sites/daveywinder/2024/10/12/update-now-as-critical-windows-9810-vulnerabilit...