18-Year-Old NGINX Rewrite Module Flaw Enables Unauthenticated RCE

Cybersecurity researchers have disclosed a critical heap buffer overflow flaw (CVE-2026-42945) in NGINX's rewrite module, enabling unauthenticated remote code execution. The vulnerability's ability to allow unauthenticated attackers to achieve remote code execution on NGINX servers without prior authentication poses a significant risk, especially for organizations relying heavily on NGIโ€ฆ.

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