The Microsoft Security Response Center investigates all reports of security vulnerabilities affecting Microsoft products and services. If you are a security researcher and believe you have found a Microsoft security vulnerability, we would like to work with you to investigate it.

Please note that the Microsoft Security Response Center does not provide technical support for Microsoft products. If you need assistance with something other than reporting a possible security vulnerability, please see the statement below that most closely matches your situation and expand the statement for next steps.

If you are a security researcher and believe you have found a security vulnerability that meets the definition of a security vulnerability that is not resolved by the 10 Immutable Laws of Security, please send e-mail to us at To help us to better understand the nature and scope of the possible issue, please include as much of the below information as possible.

  • Type of issue (buffer overflow, SQL injection, cross-site scripting, etc.)
  • Product and version that contains the bug, or URL if for an online service
  • Service packs, security updates, or other updates for the product you have installed
  • Any special configuration required to reproduce the issue
  • Step-by-step instructions to reproduce the issue on a fresh install
  • Proof-of-concept or exploit code
  • Impact of the issue, including how an attacker could exploit the issue

Microsoft follows Coordinated Vulnerability Disclosure (CVD) and, to protect the ecosystem, we request that those reporting to us do the same.
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You should receive a response within 24 hours. If for some reason you do not, please follow up with us to ensure we received your original message.

For further information, please visit the Microsoft Security Response Policy and Practices page and read the Acknowledgment Policy for Microsoft Security Bulletins.

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Cybercriminals often use phishing email messages to try to steal personal information. Learn how to recognize what a phishing email message looks like and how to avoid scams that use the Microsoft name fraudulently.

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