# OpenAI Launches GPT-5.6-Cyber, a Model That Solves 95% of Exploit Requests

*2026-08-17 06:02 UTC · AI · 2 min read*

> OpenAI's new GPT-5.6-Cyber model completes 95% of exploit-related requests and has already found a Chrome zero-day and 400+ kernel flaws.

OpenAI has expanded its "Daybreak" cybersecurity program into two access tiers and released GPT-5.6-Cyber, a purpose-trained model with sharply reduced refusals for offensive security tasks. Daybreak Blue gives defenders a guardrail-tuned version of GPT-5.6 Sol for incident detection and vulnerability management, while Daybreak Red grants trusted partners — including Accenture, Cisco, Cloudflare, CrowdStrike, IBM and Palo Alto Networks — access to GPT-5.6-Cyber for authorized vulnerability research and exploit development.

The numbers show why OpenAI built a separate tier: GPT-5.6-Cyber completed 95.0% of exploit-related requests in testing, versus just 1.5% for the standard GPT-5.6 Sol model, which is tuned to refuse them. Using the new model, researchers found real, previously unknown flaws, including CVE-2026-15903, a high-severity (CVSS 8.8) out-of-bounds read/write bug in Chrome's V8 JavaScript engine that could allow arbitrary code execution via crafted HTML. Google has already patched the flaw. The same effort turned up mobile-OS privilege-escalation chains, three critical database vulnerabilities with remote-code-execution paths, and more than 400 kernel-level privilege-escalation flaws.

The release underscores the dual-use tension at the center of frontier AI: the same reasoning that finds zero-days for defenders could just as easily arm attackers. OpenAI is betting that gating the more capable model behind vetted partners and coordinated disclosure lets defenders benefit first.

## Sources

- [thehackernews.com](https://thehackernews.com/2026/08/openai-launches-gpt-56-cyber-with.html)
- [openai.com](https://openai.com/index/expanding-daybreak-as-the-cyber-defense-window-narrows/)

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TechTools News · https://techtools.cz/tools/news/article/2203-openai-launches-gpt-5-6-cyber-a-model-that-solves-95-of-exploit-requests
Česká verze: https://techtools.cz/tools/news/clanek/2276-openai-spousti-gpt-5-6-cyber-model-ktery-vyhovi-95-zadosti-o-exploit