Introduction In this blog post, we will share the story about how we discovered a critical stack corruption bug that has existed in Windows for more than 20 years (CVE-2023-36719). The bug was fou...

As we recently published on the Microsoft Edge Dev blog, Adobe and Microsoft are enhancing the PDF experience and value users have come to expect in Microsoft Edge. Adobe brings an unrivalled bre...

Introduction Memory corruption issues in the browser process are typically some of the most severe issues in Chromium and browsers that are based off it. Such issues can include use-after-free (UA...

In a previous blogpost it covered and mentioned automation and how it is great at finding memory issues. We also got some feedback to expand on fuzzing, so this post will cover how we came to devel...

Introduction Today, we’re excited to announce some improvements to our experimental security feature in Microsoft Edge 98. This is a continuation of our previous post. If you have not read it, we ...

I usually write about achievements in the form of a browser bug that I found interesting, in hopes that someone reading will find it useful in their own bug hunting pursuits. However, in this blog ...

Introduction The VR team is experimenting with a new feature that challenges some conventional assumptions held by many in the browser community. Our hope is to build something that changes the mo...

In this post, we’ve invited David Erceg, one of the participants in the Edge bug bounty program, to talk about interesting bugs he found in Edge. By sharing this information, we hope more security...

Introduction When it comes to an application’s user interface (UI), one may care for the aesthetics, design consistency, simplicity, and clarity to ensure a good UI. However, an application like a...

After the research on Site Isolation, it became clear that the most common problem with extensions is calling chrome.tabs.create with a URL received from a content script message. While such a bug ...