Date：2023/04/07

【Security Vulnerability Warning】Microsoft Outlook exists a high-risk security vulnerability of privilege expansion (CVE-2023-23397). Please confirm and update as soon as possible or evaluate and take mitigation measure!

Subject: Microsoft Outlook exists a high-risk security vulnerability of privilege expansion (CVE-2023-23397). Please confirm and update as soon as possible or evaluate and take mitigation measure!

Description:
For details, please refer to the following links.

https://www.microsoft.com/en-us/security/blog/2023/03/24/guidance-for-investigating-attacks-using-cve-2023-23397/

https://www.ithome.com.tw/news/155952

https://www.xmcyber.com/blog/cve-2023-23397-outlook-vulnerability/

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2023-23397

https://www.informationsecurity.com.tw/article/article_detail.aspx?aid=10386

Network System Division
Computer and Communication Center