CVE-2023-36893: Microsoft Outlook Spoofing Vulnerability

Published Aug 8, 2023
·
Updated

Microsoft Outlook Spoofing Vulnerability

Affected Software

17 affected componentsFixes available
Microsoft 365 Apps
Microsoft Office=2019
Microsoft Office Long Term Servicing Channel=2021
Microsoft Outlook=2013-sp1
Microsoft Outlook=2013-sp1
Microsoft Outlook=2016
Microsoft Outlook 2013 RT<15.0.5579.1000
15.0.5579.1000
Microsoft Office 2019 for 64-bit editions<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft 365 Apps for Enterprise<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft Office LTSC 2021 for 64-bit editions<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft Outlook 2013<15.0.5579.1000
15.0.5579.1000
Microsoft Office 2019 for 32-bit editions<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft Outlook 2016<16.0.5408.1000
16.0.5408.1000
Microsoft Outlook 2016<16.0.5408.1000
16.0.5408.1000
Microsoft Outlook 2013<15.0.5579.1000
15.0.5579.1000
Microsoft 365 Apps for Enterprise<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases
Microsoft Office LTSC 2021 for 32-bit editions<https://aka.ms/OfficeSecurityReleases
https://aka.ms/OfficeSecurityReleases

Remediation

Recommended actions to resolve this vulnerability, in priority order.

  1. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 15.0.5579.1000Patch KB5002449
  2. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in https://aka.ms/OfficeSecurityReleases
  3. Upgrade

    Upgrade to a fixed release to a version that resolves this vulnerability.

    Fixed in 16.0.5408.1000Patch KB5002459

Event History

Aug 8, 2023
CVE Published
07:00 AM
Data Sourced
07:00 AM
DescriptionSeverityWeakness
Data Sourced
via Microsoft·07:00 AM
Affected Software
Updated
via Microsoft·07:00 AM
Description
CVE Published
via MITRE·05:08 PM
Data Sourced
via MITRE·05:08 PM
DescriptionSeverity
Data Sourced
via NVD·06:15 PM
RemedyDescriptionSeverityWeaknessAffected Software

Frequently Asked Questions

1

What is CVE-2023-36893?

CVE-2023-36893 is a Microsoft Outlook Spoofing Vulnerability.

2

Which software is affected by CVE-2023-36893?

The following software is affected: Microsoft 365 Apps for Enterprise, Microsoft Office 2019, Microsoft Outlook 2013 RT, and Microsoft Office LTSC 2021.

3

What is the severity of CVE-2023-36893?

CVE-2023-36893 has a severity rating of 6.5 (high).

4

How can I fix CVE-2023-36893?

To fix CVE-2023-36893, apply the security updates provided by Microsoft for the affected software versions.

5

Where can I find more information about CVE-2023-36893?

You can find more information about CVE-2023-36893 on the Microsoft Security Response Center website.

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.
© 2026 SecAlerts Pty Ltd.
ABN: 70 645 966 203, ACN: 645 966 203