Vulnerability Intelligence Report
SonicWall Email Security Unrestricted Upload of File Vulnerability
CVE-2021-20022
SonicWall Email Security version 10.0.9.x contains a vulnerability that allows a post-authenticated attacker to upload an arbitrary file to the remote host.
CISA KEV
SSVC: Active Exploitation
Automatable
CVSS Base Score
7.2
HIGH
Exploitability:1.3
Impact Score:5.9
EPSS Probability:16.51%
Executive Threat Verdict
Evaluating...
Evaluating Threat Landscape...
Assessing known weaponization, exploitation telemetry, and federal advisories.
Attack Surface
—
Authentication
—
Weaponization
—
SSVC Action
—
Weaknesses (CWE)
CWE-434 ↗CWE-434: Unrestricted Upload of File with Dangerous Type
Affected Products & Versions
| Vendor | Product | Affected Versions |
|---|---|---|
| SonicWall | Email Security | 10.0.9 and earlier (affected) |
References & Technical Advisories
No reference links found.
Threat Intelligence Signals
Identity & Timeline
| Status | PUBLISHED |
| Assigning Authority | SonicWall, Inc. · Vendor · USA |
| Reserved | 2020-12-17T00:00:00 |
| Published | 2021-04-09T17:50:15 |
| Last Updated | 2026-08-12T03:55:22 |
Community Chatter & Buzz