VulnLLM R 7B is a security-focused specialist built on Qwen2.5's 7B foundation, fine-tuned by UCSB-SURFI for vulnerability research and analysis tasks. It brings domain-specific depth to topics like code security, exploit reasoning, and vulnerability classification that general-purpose models often handle superficially. As a compact 7B model, it trades broad general knowledge for sharper focus within its security niche.