Live › vulnerability › CVE-2021-20023
Go to dashboardSonicWall Email Security has a path traversal flaw that lets a logged-in attacker read arbitrary files on the server. Attackers have used it in a chain with CVE-2021-20021 and CVE-2021-20022 to escalate privileges.
Summary written from the sources below. Check the originals before acting.
First seen by InfraStack 2026-10-23 19:11 UTC, 3h before NVD. All times on this page are UTC.
Apply updates per vendor instructions.
| Product | Ecosystem | Affected | Fixed in |
|---|---|---|---|
| SonicWall SonicWall Email Security | vendor | – | – |
Unknown from the sources. In the analyst’s queue.
Apply the vendor update per SonicWall instructions; exact fixed version not stated in sources.
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
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 required action: Apply updates per vendor instructions.
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