Live › vulnerability › CVE-2021-20022
Go to dashboardSonicWall Email Security has an unrestricted file upload flaw that lets an authenticated attacker upload a file to the appliance. It is used in a exploit chain with CVE-2021-20021 and CVE-2021-20023 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 updates per vendor instructions (SonicWall advisory for the Email Security product).
Each row is the first time that source carried this signal. The analyst’s rows are its own findings.
SonicWall Email Security contains an unrestricted upload of file with dangerous type vulnerability that allows a post-authenticated attacker to upload a file to the remote host. This vulnerability has known usage in a SonicWall Email Security exploit chain along with CVE-2021-20021 and CVE-2021-20023 to achieve privilege escalation.
CISA required action: Apply updates per vendor instructions.
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CISA KEV catalog, Creative Commons 0 · EPSS scores by FIRST, used with attribution · NVD data is provided by NIST and is public domain. Posts quoted belong to their authors.