SonicWall SonicWall Email Security

What it is

SonicWall Email Security contains a path traversal vulnerability that allows a post-authenticated attacker to read files on the remote host. This vulnerability has known usage in a SonicWall Email Security exploit chain along with CVE-2021-20021 and CVE-2021-20022 to achieve privilege escalation.

What to do

Apply updates per vendor instructions.

Vendor notices and references

• nvd.nist.gov/vuln/detail/CVE-2021-20023

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