CVE-2021-20023mediumunder attackransomwareCWE-22

CVE-2021-20023: medium-severity vulnerability in SonicWall Email Security

Published · Updated

E-mail alert when it lands in KEV, gets a public PoC or its score goes up.

55Vexday Risk Score

Prioritize patching. It under exploitation confirmed by CISA.

ssvc Actcvss 4.9epss 52%
from disclosure to weapon
Published on NVDApr 20
CISA KEV+197d
Action required by CISAfederal deadline: 2021-11-17

Apply updates per vendor instructions.

In short

SonicWall Email Security versions 10.0.9.x contain a flaw that allows someone already logged into the system to read any file on the server. This is dangerous because attackers with access can steal sensitive configuration files or data.

Technical detail

Path traversal vulnerability (CWE-22) in SonicWall Email Security 10.0.9.x enables post-authenticated arbitrary file read via improper input validation. An attacker with valid credentials can bypass directory restrictions and access unauthorized files on the host system, potentially exposing sensitive configuration data or credentials.

Summary generated and translated by AI from the official description.

The full analysis of this CVE is available in Portuguese →

SonicWall Email Security version 10.0.9.x contains a vulnerability that allows a post-authenticated attacker to read an arbitrary file on the remote host.
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N