Connect with us

Hi, what are you looking for?



Microsoft Offers Up to $20,000 for Vulnerabilities in Defender Products

Microsoft invites researchers to new bug bounty program focused on vulnerabilities in its Defender products.

Microsoft announced on Tuesday that it is willing to pay up to $20,000 for vulnerabilities reported as part of a new bug bounty program for Defender products.

The new Microsoft Defender Bounty Program kicks off with Defender for Endpoint APIs, but the tech giant says other products in the Defender brand will be added in time.

“The Microsoft Defender Bounty Program invites researchers across the globe to identify vulnerabilities in Defender products and services and share them with our team,” the company says.

Participating researchers may earn between $500 and $20,000 for the identified flaws, depending on impact and report quality.

The highest rewards, Microsoft says, may be awarded for critical-severity remote code execution (RCE) bugs. The company is willing to hand out up to $8,000 for critical elevation of privilege and information disclosure issues, and may offer up to $3,000 for spoofing and tampering vulnerabilities.

To qualify for a bug bounty reward, researchers need to report flaws that are within the scope of the program, which have not been previously reported, and which can be reproduced on the latest, fully patched version of the product.

In-scope vulnerabilities include cross-site scripting (XSS), cross-site request forgery (CSRF), server-side request forgery (SSRF), cross-tenant data tampering or access, insecure direct object references and insecure deserialization, injection, server-side code execution, and security misconfiguration issues.

Reports covering components with known vulnerabilities should also include proof-of-concept (PoC) exploit code, the tech giant says.

Advertisement. Scroll to continue reading.

The reports need to be clear and concise, and should include the information necessary to reproduce the issue.

All reports, Microsoft says, should be submitted through the MSRC Researcher Portal, indicate which high-impact scenario they qualify for, and should describe the attack vector for the bug.

“The Defender Bounty program’s scope is limited to technical vulnerabilities in Defender-related products and services. If you discover customer data while conducting your research, or are unclear if it is safe to proceed, please stop and contact us,” the tech giant notes.

Further details on the Microsoft Defender Bounty Program can be found on the MSRC portal.

Related: Microsoft Paid Out $63 Million Since Launch of First Bug Bounty Program 10 Years Ago

Related: Microsoft Offers Up to $15,000 in New AI Bug Bounty Program

Related: Microsoft Paid Out $13 Million via Bug Bounty Programs for Fourth Consecutive Year

Written By

Ionut Arghire is an international correspondent for SecurityWeek.


Daily Briefing Newsletter

Subscribe to the SecurityWeek Email Briefing to stay informed on the latest threats, trends, and technology, along with insightful columns from industry experts.

Gain valuable insights from industry professionals who will help guide you through the intricacies of industrial cybersecurity.


Join us for an in depth exploration of the critical nature of software and vendor supply chain security issues with a focus on understanding how attacks against identity infrastructure come with major cascading effects.


Expert Insights

Related Content


Less than a week after announcing that it would suspended service indefinitely due to a conflict with an (at the time) unnamed security researcher...

Data Breaches

OpenAI has confirmed a ChatGPT data breach on the same day a security firm reported seeing the use of a component affected by an...

IoT Security

A group of seven security researchers have discovered numerous vulnerabilities in vehicles from 16 car makers, including bugs that allowed them to control car...


A researcher at IOActive discovered that home security systems from SimpliSafe are plagued by a vulnerability that allows tech savvy burglars to remotely disable...

Risk Management

The supply chain threat is directly linked to attack surface management, but the supply chain must be known and understood before it can be...


Patch Tuesday: Microsoft calls attention to a series of zero-day remote code execution attacks hitting its Office productivity suite.


Patch Tuesday: Microsoft warns vulnerability (CVE-2023-23397) could lead to exploitation before an email is viewed in the Preview Pane.


The latest Chrome update brings patches for eight vulnerabilities, including seven reported by external researchers.