nginx Worker Crash-Recovery Loop Indicating ASLR Brute-Force (CVE-2026-42533)

Georgios Maragos@Gmarak

•updated Jul 28, 2026•3•1•20

Detects repeated Nginx worker process crashes terminated by signals 6 (SIGABRT) or 11 (SIGSEGV) accompanied by core dumps. High-frequency crashes originating from a single source are indicative of an adversary brute-forcing ASLR in preparation for exploitation of memory corruption vulnerabilities (e.g., buffer overflows or heap clobbering) to achieve remote code execution.