Dead.letter (CVE-2026-45185) Humans vs. LLM for Unauthenticated RCE Race on Exim

XBOW disclosed CVE-2026-45185, a critical unauthenticated RCE in Exim mail server, using the disclosure window to benchmark autonomous LLM exploit development against human researchers. This head-to-head comparison has direct implications for AI-assisted offensive security capabilities and vulnerability research timelines.