This impacted C++'s standard library as well, but since the standard says it's undefined behavior, they said "not a bug" and didn't file CVEs.
Nobody believes that Rust programs will have zero bugs or zero security vulnerabilities. It's that it can significantly reduce them.
- most often are ub in binding code between rust and language x
- if not binding code the severity is often below 5, which is most often not a bug that will affect you
- exceptions are code with heavy async usage and user input handling (which rust never advertises to fix and is common in all languages, even ones with gc)