https://www.bleepingcomputer.com/news/security/malware-now-trying-to-exploit-new-windows-installer-zero-day/

Malware creators have already started testing a proof-of-concept exploit targeting a new Microsoft Windows Installer zero-day publicly disclosed by security researcher Abdelhamid Naceri over the weekend.

"Talos has already detected malware samples in the wild that are attempting to take advantage of this vulnerability," said Jaeson Schultz, Technical Leader for Cisco's Talos Security Intelligence & Research Group.