OpenAI GPT-5.2-Codex Supercharges Agentic Coding and Cyber Vulnerability Detection

OpenAI released GPT-5.2-Codex, a model optimized for coding and cybersecurity tasks with improved benchmarks and agentic capabilities; the report also describes researcher-driven vulnerability discovery in React Server Components that produced multiple CVEs — notably CVE-2025-55182 (critical RCE, CVSS 10.0) which was fixed on December 3, and additional CVEs for source code exposure and DoS disclosed December 11 — and recommends applying React patches (e.g., 19.0.3+).