SonicWall SonicWall Email Security

What it is

SonicWall Email Security contains an improper privilege management vulnerability that allows an attacker to create an administrative account by sending a crafted HTTP request to the remote host. This vulnerability has known usage in a SonicWall Email Security exploit chain along with CVE-2021-20022 and CVE-2021-20023 to achieve privilege escalation.

What to do

Apply updates per vendor instructions.

Vendor notices and references

• nvd.nist.gov/vuln/detail/CVE-2021-20021

Description and required action as published by CISA. Full record at NVD.