Outlook bug bounty payout increases to $400,000, but only for a limited time

Outlook vs Windows Mail
Outlook vs Windows Mail (Image credit: Future)

What you need to know

  • Exploit acquisition platform Zerodium has temporarily increased its bounty for Microsoft Outlook zero-click remote code executions from $250,000 to $400,000.
  • These types of exploits can attack a target without requiring interaction such as reading an email or opening an attachment.
  • Zerodium's customers are government institutions that are primarily in North America and Europe.

Zerodium, an exploit acquisition platform, has increased its payout for Microsoft Outlook zero-click remote code executions (RCEs) from $250,000 to $400,000. The increase is a temporary measure to obtain zero-click exploits that can attack PCs and networks without requiring user interaction. Zerodium outlines the change on its limited-time bug bounties page.

Some attacks, such as phishing scams, require people to interact with an attack like opening an email or email attachment. Zero-click exploits do not require interaction, making them more dangerous.

"We are temporarily increasing our payout for Microsoft Outlook RCEs from $250,000 to $400,000," explains Zerodium. "We are looking for zero-click exploits leading to remote code execution when receiving/downloading emails in Outlook, without requiring any user interaction such as reading the malicious email message or opening an attachment. Exploits relying on opening/reading an email may be acquired for a lower reward."

Latest Videos From

Zerodium specializes in zero-day exploits and security research. Its customers are government institutions that are primarily in North America and Europe.

The increased payout for Microsoft Outlook zero-click RCEs began on January 27, 2022, but does not have a definitive end date.

Microsoft also has a list of bounty payouts ranging up to $250,000. Microsoft paid $13.6 million for bug bounties between July 2020 and July 2021.

You can compare Microsoft's bug bounty payouts to those of Zerodium to see how the companies compare. The value of bounties varies dramatically based on the severity of the discovered vulnerability.

Sean Endicott
News Writer

Sean Endicott is a News Writer at Windows Central, where he covers Windows 11, Surface hardware, Microsoft 365, AI, apps, and the broader PC ecosystem. Since joining the site in 2017, he has written well over a thousand articles across the Microsoft landscape, covering breaking news, analysis, and feature reporting.

He writes Windows Wrap, a weekly column covering the biggest stories in Windows and the PC industry, and what they mean for the platform going forward.

Before joining Windows Central full-time, Sean worked in journalism and media production after earning a First Class degree in Broadcast Journalism from Nottingham Trent University. Outside of tech, he is an award-winning American football coach based in Nottingham, England, and was named BAFCA Youth Coach of the Year in 2024.