Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.0060.
The MITRE CVE dictionary describes this issue as:
Heap-based Buffer Overflow in GitHub repository vim/vim prior to 9.0.0060.
Red Hat Product Security has rated this issue as having a Low security impact because the "victim" has to run an untrusted file IN SCRIPT MODE. Someone who is running untrusted files in script mode is equivalent to someone just taking a random python script and running it.