A Trial To Find Out If Vidutolimod Together With Cemiplimab Is Safe And If It Works In Adult Participants With Advanced Cancer Or Metastatic Cancer

The goal of this study is to learn if giving cemiplimab and vidutolimod together could be effective in treating advanced cancer. The main questions it aims to answer are: * How many participants' cancers respond to vidutolimod together with cemiplimab? * Is vidutolimod together with cemiplimab safe and well-tolerated? * How well does vidutolimod together with cemiplimab treat participants' cancer? Participants will receive trial treatment for up to 2 years. 30 days after stopping treatment, participants will have a follow-up visit. After that visit, the trial staff will continue to follow up with participants about every 3 months, until the trial ends.