Day one of Pwn2Own Berlin 2026 featured 22 entries targeting widely used technologies, including browsers, operating systems, AI platforms, and NVIDIA infrastructure. By the end of the day, researchers demonstrated 24 unique zero-day vulnerabilities and earned a total of $523,000 in rewards, highlighting ongoing security risks across major enterprise and consumer software ecosystems.
Orange Tsai of the DEVCORE Research Team made the headlines; he chained four separate logic bugs to escape the Microsoft Edge sandbox, a technically demanding achievement that earned him $175,000 and 17.5 Master of Pwn points in a single attempt. It was the kind of result that reminds you why this competition exists: not to embarrass vendors, but to surface flaws in controlled conditions before someone with worse intentions finds them first.
“Orange Tsai (@orange_8361) of DEVCORE Research Team (@d3vc0r3) chained 4 logic bugs to achieve a sandbox escape on Microsoft Edge, earning $175,000 and 17.5 Master of Pwn points.” reads the post by Zero Day Initiative.
That's my chain — a full chain w/ logic bugs only! No memory corruption, no AI, and of course no collisions at all 😉 https://t.co/Rv0AgeRgEJ
— Orange Tsai 🍊 (@orange_8361) May 14, 2026
Windows 11 was successfully exploited three times during the day: by Angelboy and TwinkleStar03 of the DEVCORE Internship Program, by Marcin Wiązowski, and by Kentaro Kawane of GMO Cybersecurity. Each demonstrated a distinct privilege-escalation zero-day on a fully patched system, earning $30,000 apiece. Three different researchers, three different bugs, one operating system. That pattern alone is worth noting.
Valentina Palmiotti (@chompie1337) of IBM X-Force Offensive Research had arguably the most productive individual day, picking up $70,000 across two separate wins: a $50,000 award for a zero-day in the NVIDIA Container Toolkit, and another $20,000 for rooting Red Hat Linux for Workstations.
“chompie of IBM X-Force Offensive Research (XOR) used a single bug to exploit NV Container Toolkit, earning $50,000 and 5 Master of Pwn points.” continues the post.
On the NVIDIA side, Satoki Tsuji of Ikotas Labs exploited an overly permissive allowed list vulnerability in NVIDIA Megatron Bridge for $20,000, while haehae collected another $20,000 for a separate Megatron Bridge zero-day, and rounded out the day with a further $20,000 for dropping a zero-day in the Chroma vector database.
AI platforms were a prominent target throughout the day, reflecting this year’s competition theme around enterprise and artificial intelligence technologies. k3vg3n chained three bugs, including a server-side request forgery and a code injection, to bring down LiteLLM, walking away with $40,000. Two separate teams, Compass Security and maitai of Doyensec, each collected $40,000 for independently exploiting OpenAI’s Codex coding agent. STARLabs SG earned another $40,000 for a zero-day in LM Studio.
“k3vg3n chained 3 bugs including SSRF and Code Injection to take down LiteLLM. $40,000 and 4 Master of Pwn points. Full win.” states the post.
Not every attempt succeeded. Le Duc Anh Vu of Viettel Cyber Security could not get their OpenAI Codex exploit working within the time limit, and Park Jae Min’s attempt against the Oracle Autonomous AI Database also fell short.
At the end of day one, DEVCORE Research Team sits atop the leaderboard with $205,000, a commanding lead built almost entirely on Orange Tsai’s Edge chain. Valentina Palmiotti follows in second place at $70,000.
Day two brings a new set of targets to the stage, including Microsoft SharePoint, Microsoft Exchange, Apple Safari, Mozilla Firefox, Cursor, Anthropic Claude Code, and additional attempts against Windows 11, Red Hat Enterprise Linux, and several AI platforms. The full prize pool across all categories exceeds $1,000,000. Per competition rules, all targets run the latest available software versions, and vendors receive 90 days to patch any zero-days demonstrated on stage before public disclosure.
Last year’s Berlin edition paid out $1,078,750 for 29 vulnerabilities. With $523,000 already awarded after a single day and a full schedule still ahead, 2026 is shaping up to exceed it.
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(SecurityAffairs – hacking, Pwn2Own Berlin 2026)
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