Just viewing .doc or .rtf files can be enough to break into a victim's PC. Further information:
https://www.heise.de/news/Zero-Day-Luecke-in-MS-Office-Microsoft-machen-Empfehlungen-7126993.html, opens an external URL in a new window
The workaround officially recommended by Microsoft is described here for tech-savvy users:
https://msrc-blog.microsoft.com/2022/05/30/guidance-for-cve-2022-30190-microsoft-support-diagnostic-tool-vulnerability/, opens an external URL in a new window
We'll keep you posted on countermeasures and will update this article regularly as new information becomes available.