CVE-2021-20023: SonicWall Email Security Path Traversal Vulnerability.
SonicWall Email Security Path Traversal Vulnerability. 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.
- CISA KEV-listed (remediation due 2021-11-17)
- used in ransomware campaigns
- EPSS 55.4% (98.1% percentile)