Pwn2Own Berlin 2026: Researchers Earn $385,750 on Day Two, Exploiting Zero-Days in Windows 11, Exchange, and More
The second day of **Pwn2Own Berlin 2026** saw security researchers collect a staggering $385,750 in cash awards. They achieved this by exploiting 15 unique zero-day vulnerabilities in prominent products like **Windows 11**, **Microsoft Exchange**, and **Red Hat Enterprise Linux for Workstations**.

**Pwn2Own Berlin 2026**, held at the **OffensiveCon** conference from May 14-16, focuses on enterprise technologies and artificial intelligence. Researchers had the opportunity to earn over $1,000,000 in cash and prizes by targeting fully patched products across various categories, including web browsers, enterprise applications, cloud-native/container environments, virtualization, local privilege escalation, servers, local inference, and LLMs.
According to **Pwn2Own's** rules, all targeted devices run the latest operating system versions. Successful entries must compromise the target and demonstrate arbitrary code execution. Vendors are granted 90 days to patch the disclosed zero-days.
## Microsoft Exchange RCE via Chained Bugs
The highlight of the second day was **Cheng-Da Tsai** (also known as **Orange Tsai**) of **DEVCORE Research Team**, who earned $200,000. Tsai achieved remote code execution with SYSTEM privileges on **Microsoft Exchange** by chaining three bugs.
## Other Notable Exploits
* **Siyeon Wi** collected $7,500 for exploiting an integer overflow bug to hack **Windows 11**.
* **Ben Koo** of Team DDOS escalated privileges to root on **Red Hat Enterprise Linux for Workstations**, earning a $10,000 cash prize.
* **0xDACA** and **Noam Trobishi** leveraged a use-after-free bug to exploit the **NVIDIA Container Toolkit**.
## AI Targeted
The AI category also saw significant action:
* **Le Duc Anh Vu** of **Viettel Cyber Security** hacked the **Cursor AI** coding agent for $30,000.
* **Sina Kheirkhah** of Summoning Team demoed an **OpenAI Codex** zero-day ($20,000).
* **Compass Security** exploited **Cursor** ($15,000).

*Pwn2Own leaderboard (ZDI)*
## Day One Highlights
On the first day, **Orange Tsai** earned $175,000 for chaining four logic bugs for a **Microsoft Edge** sandbox escape. **Valentina Palmiotti** (chompie) of **IBM X-Force Offensive Research** collected $20,000 for rooting **Red Hat Linux for Workstations** and $50,000 for an **NVIDIA Container Toolkit** zero-day.
**Windows 11** was also compromised three times on day one by **Angelboy** and **TwinkleStar03** (working with the **DEVCORE Internship Program**), **Kentaro Kawane** of **GMO Cybersecurity**, and **Marcin WiΔ
zowski**. Each earned $30,000 for demonstrating new privilege-escalation zero-days.
## Day Three Preview
On the third day, targets included **Microsoft Windows 11**, **VMware ESXi**, **Red Hat Enterprise Linux**, **Microsoft SharePoint**, and various AI coding agents.
## Previous Year's Success
During last year's **Pwn2Own Berlin** contest, **TrendMicro's Zero Day Initiative** awarded $1,078,750 for 29 zero-day flaws.
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