At least Zoom were all over it this time. They seem to have resolved these flaws very quickly, which is impressive.
Zoom has reached out to provide the following statement: “We thank Mazin for reporting his findings. We have fixed all relevant issues and recommend that users keep their Zoom clients up to date to ensure they receive ongoing security and product updates. Zoom appreciates vulnerability reports from researchers.” Those who think they’ve discovered a Zoom security issue are encouraged to send a detailed report to [mod redacted for privacy reasons]."