CWE
79
Advisory Published
Updated

CVE-2019-1266: XSS

First published: Wed Sep 11 2019(Updated: )

A spoofing vulnerability exists in Microsoft Exchange Server when Outlook Web App (OWA) fails to properly handle web requests, aka 'Microsoft Exchange Spoofing Vulnerability'.

Credit: secure@microsoft.com

Affected SoftwareAffected VersionHow to fix
Microsoft Exchange Server=2016-cumulative_update_12
Microsoft Exchange Server=2016-cumulative_update_13
Microsoft Exchange Server=2019-cumulative_update_1
Microsoft Exchange Server=2019-cumulative_update_2

Never miss a vulnerability like this again

Sign up to SecAlerts for real-time vulnerability data matched to your software, aggregated from hundreds of sources.

Frequently Asked Questions

  • What is the severity of CVE-2019-1266?

    CVE-2019-1266 is rated as important as it can lead to spoofing attacks in Microsoft Exchange Server.

  • How do I fix CVE-2019-1266?

    To fix CVE-2019-1266, ensure that your Microsoft Exchange Server is updated with the latest cumulative updates.

  • Which versions of Microsoft Exchange Server are affected by CVE-2019-1266?

    CVE-2019-1266 affects Microsoft Exchange Server 2016 Cumulative Update 12 and 13, and 2019 Cumulative Update 1 and 2.

  • What impact does CVE-2019-1266 have on users?

    CVE-2019-1266 can allow an attacker to spoof sent messages, potentially misleading users.

  • Is there any workaround for CVE-2019-1266?

    Currently, the only recommended solution for CVE-2019-1266 is applying the security updates provided by Microsoft.

Contact

SecAlerts Pty Ltd.
132 Wickham Terrace
Fortitude Valley,
QLD 4006, Australia
info@secalerts.co
By using SecAlerts services, you agree to our services end-user license agreement. This website is safeguarded by reCAPTCHA and governed by the Google Privacy Policy and Terms of Service. All names, logos, and brands of products are owned by their respective owners, and any usage of these names, logos, and brands for identification purposes only does not imply endorsement. If you possess any content that requires removal, please get in touch with us.
© 2025 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203