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WASM Support
Thomas edited this page Oct 1, 2025
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WASM is relatively new to V8 and is very actively evolving, so it acts as an interesting attack vector with no CVEs ever.
Fuzzilli is built around JavaScript, but we want to adapt it to support this new surface area.
We'd probably be focusing around the places where JavaScript and WASM interoperate, as that seems to be where the most interesting CVEs/bugs are (says who??).
None so far.
They just (Febuary) merged some preliminary WASM support, but there's still some missing stuff
3 years old, unsure of how far they got in it, but apparently it can run.
(e.g. https://github.com/googleprojectzero/fuzzilli/issues/525)
There's existing functionality in GenerateRandomWasmModule to generate random modules and seeing what happens.