# Vercel's $1M sandbox challenge finds a kernel zero-day reaching the host

> Source: <https://www.vibeleaderboard.ai/intel/brief/2026-10-15>
> Published: 2026-10-15 11:16:48+00:00

Vercel's sandbox escape challenge drew 1,285 reports and paid $242,000 in bounties. The top find was a Linux kernel networking flaw that let a microVM guest leak host memory, crash the host or run code, with no customer data accessed.
Read: Vercel's sandbox escape challenge drew 1,285 reports and paid $242,000 in bounties. The top find was a Linux kernel networking flaw that let a microVM guest leak host memory, crash the host or run code, with no customer data accessed.
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