Next.js Patches Critical AVIF and Windows Flaws Enabling Unauthenticated RCE

Credit: Hacktron<br>Vercel has released security patches for two critical-severity vulnerabilities in the Next.js web framework, both of which allow unauthenticated remote code execution, one exploitable via specially crafted AVIF image files and the other through a path traversal flaw affecting servers that use a Windows filesystem.

The Windows path traversal, tracked as CVE-2026-75604&amp;