Date：2021/04/27

【Security Vulnerability Warning】SonicWall's email security products exist security vulnerabilities (CVE-2021-20021~20023), please confirm and update as soon as possible!

Subject:【Security Vulnerability Warning】SonicWall's email security products exist security vulnerabilities (CVE-2021-20021~20023), allowing attackers to remotely execute arbitrary code, please confirm and update as soon as possible!
Description:
For details, please refer to the following links.

https://www.sonicwall.com/support/product-notification/security-notice-sonicwall-email-security-zero-day-vulnerabilities/210416112932360/

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0007

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0008

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0010

https://www.fireeye.com/blog/threat-research/2021/04/zero-day-exploits-in-sonicwall-email-security-lead-to-compromise.html

https://www.ithome.com.tw/news/143987

Network System Division
Computer and Communication Center