Microsoft Security Response Center (MSRC) Getting Started (2026)

Getting started overview

The Microsoft Security Response Center (MSRC) is the designated interface for security researchers and the public to report potential security vulnerabilities in Microsoft products and services. Unlike many API-centric platforms, the MSRC does not provide developer APIs or SDKs for direct integration. Instead, getting started with MSRC primarily involves engaging with their established processes for vulnerability disclosure, accessing security advisories, and utilizing their public resources to stay informed about security updates and guidance.

The MSRC's operational model focuses on receiving vulnerability reports, validating them, developing mitigations or fixes, and then communicating these resolutions through security advisories. For those looking to report a vulnerability, the process is structured to ensure secure and efficient disclosure. For users and organizations, the MSRC provides a centralized hub for critical security information, including detailed advisories and best practices.

This guide outlines the steps for engaging with the MSRC, whether you are a security researcher looking to report a finding or a technical professional seeking to understand Microsoft's security posture and advisories.

Quick Reference Table

Create an account and get keys

The Microsoft Security Response Center (MSRC) primarily operates as a portal for vulnerability reporting and information dissemination, rather than a service requiring API keys for programmatic access. Therefore, the concept of "getting keys" in the traditional developer sense does not apply directly to MSRC interactions.

Microsoft Account for Reporting

If you intend to report a security vulnerability to Microsoft, you will typically need a standard Microsoft account. This account serves as your identity for interacting with the MSRC portal and tracking the status of your reported vulnerabilities. Creating a Microsoft account is a straightforward process:

1. Navigate to the Microsoft account creation portal.
2. Follow the prompts to create a new account, providing an email address or phone number and setting a password.
3. Verify your account, usually through an email or SMS code.

Once you have a Microsoft account, you can use it to log into the MSRC Vulnerability Research Portal to submit new findings and view the status of existing reports. The MSRC portal itself handles authentication via your Microsoft account credentials.

Accessing Advisories and Updates

Accessing MSRC security advisories and the Microsoft Security Update Guide does not require an account or API keys. These resources are publicly available to ensure all users can stay informed about potential security risks and necessary updates for Microsoft products. You can directly visit the Microsoft Security Update Guide to browse advisories, search for specific vulnerabilities, and subscribe to notifications.

Your first request

Since the MSRC does not offer a traditional API for programmatic requests, your "first request" will depend on your objective: either reporting a vulnerability or accessing security information.

Reporting a Vulnerability

If your goal is to report a security vulnerability, your first "request" involves submitting a detailed report through the MSRC Vulnerability Research Portal. This process is guided and requires comprehensive information to facilitate investigation. Before submitting, ensure you have:

• A clear description of the vulnerability.
• Steps to reproduce the vulnerability reliably.
• Identification of the affected Microsoft product(s) or service(s).
• Evidence, such as screenshots, proof-of-concept code, or network captures.
• Information about the potential impact of the vulnerability.

To submit your first vulnerability report:

1. Sign in to the MSRC Vulnerability Research Portal with your Microsoft account.
2. Click on the option to "Submit a new vulnerability."
3. Fill out the submission form with all relevant details, attaching any supporting evidence.
4. Review your submission for accuracy and completeness.
5. Submit the report. You will receive a tracking ID for your submission, which you can use to monitor its progress within the portal.

The MSRC follows a Coordinated Vulnerability Disclosure (CVD) policy, which outlines expectations for researchers and Microsoft's response process. Understanding this policy, detailed on the Microsoft Security Response Center website, is crucial for a smooth reporting experience.

Accessing Security Advisories

If your objective is to access security advisories, your first "request" is simply navigating to the Microsoft Security Update Guide. This resource provides a searchable database of all security advisories published by Microsoft.

1. Go to the Microsoft Security Update Guide.
2. Use the search bar or filters (e.g., by product, date, or severity) to find specific advisories.
3. Click on an advisory to view detailed information, including affected products, mitigations, and updates.
4. Consider subscribing to email notifications or RSS feeds from the Security Update Guide to receive alerts for new advisories. The RSS feed for Microsoft Security Update Guide is a common method for programmatic ingestion of updates, though it's not a transactional API.

Common next steps

After your initial interaction with the Microsoft Security Response Center (MSRC), several common next steps can enhance your engagement, whether you're a security researcher or an IT professional managing Microsoft products.

For Vulnerability Reporters:

1. Monitor Report Status: Regularly check the MSRC Vulnerability Research Portal for updates on your submitted report. Microsoft's security team will communicate through this portal regarding validation, reproduction, and resolution progress.
2. Respond to MSRC Inquiries: Be prepared to provide additional information or clarification if requested by the MSRC team. Timely responses can expedite the vulnerability resolution process.
3. Review Coordinated Vulnerability Disclosure Policy: Familiarize yourself thoroughly with Microsoft's Coordinated Vulnerability Disclosure (CVD) policy. Understanding the MSRC's expectations and timelines is essential for successful collaboration.
4. Explore Bounty Programs: If your reported vulnerability qualifies, investigate Microsoft's various bug bounty programs. These programs offer monetary rewards for eligible security findings.
5. Engage with the Security Community: Participate in broader security communities and forums. Organizations like the Forum of Incident Response and Security Teams (FIRST) provide frameworks and best practices for vulnerability coordination that align with MSRC's approach.

For IT Professionals and Users:

1. Subscribe to Advisories: Set up subscriptions for email notifications or RSS feeds from the Microsoft Security Update Guide. This ensures you receive timely alerts about new security updates and advisories directly.
2. Implement Updates Promptly: Develop a robust patch management strategy to deploy security updates released by Microsoft as soon as feasible. Delays in patching can expose systems to known vulnerabilities.
3. Review Security Baselines: Regularly consult Microsoft's security baselines and best practices for configuring operating systems and applications. These resources provide guidance on hardening your environment against common threats.
4. Leverage Microsoft Defender: Integrate and utilize Microsoft Defender for Endpoint and other Microsoft security solutions to protect against and detect threats that exploit vulnerabilities. Learn more about Microsoft Defender for Endpoint capabilities on Microsoft Learn.
5. Stay Informed via MSRC Blog: Follow the MSRC blog for insights into Microsoft's security research, threat intelligence, and vulnerability handling processes.

Troubleshooting the first call

Since the Microsoft Security Response Center (MSRC) does not involve traditional API calls, troubleshooting "first calls" typically refers to issues encountered when submitting a vulnerability report or accessing advisories. Here are common issues and their resolutions:

Troubleshooting Vulnerability Reporting

1. Issue: Unable to log in to the MSRC Vulnerability Research Portal.
   • Resolution: Ensure you are using a valid Microsoft account. If you've forgotten your password, use the "Forgot my password" link on the Microsoft account login page. Verify that your account is not locked or subject to unusual activity restrictions.
2. Issue: Report submission fails or gives an error.
   • Resolution: Check for mandatory fields that might be left blank in the submission form. Ensure any attached files meet size or format requirements. Clear your browser cache and cookies, or try a different browser. If the issue persists, document the error message and contact MSRC support via their contact form.
3. Issue: Report status is not updating.
   • Resolution: Vulnerability validation and remediation can take time, depending on complexity and impact. Allow sufficient time for the MSRC team to review. If there's no update after an extended period (e.g., several weeks), you can use the portal's communication features to inquire about the status, referencing your tracking ID.
4. Issue: Vulnerability is marked as "Duplicate" or "Not Applicable."
   • Resolution: Review the MSRC's feedback carefully. "Duplicate" means the vulnerability has already been reported. "Not Applicable" might indicate it's not a security vulnerability, is out of scope, or cannot be reproduced. If you believe there's a misunderstanding, provide additional evidence or clarification through the portal.

Troubleshooting Advisory Access

1. Issue: Cannot find a specific advisory in the Security Update Guide.
   • Resolution: Double-check your search terms for typos. Try broader terms or use filters (e.g., by product or date range) to narrow down results. If you are looking for very old advisories, they might be archived or accessible through specific historical documentation.
2. Issue: RSS feed for advisories is not updating.
   • Resolution: Verify the RSS feed URL (MSRC Security Update Guide RSS) is correct in your RSS reader. Check your RSS reader's settings for refresh intervals or connectivity issues. Occasionally, there might be no new advisories for a period, leading to no updates.

For any persistent issues not covered here, the MSRC provides a contact form for direct inquiries, particularly for issues related to the vulnerability disclosure program.