CVE Watch12 ago 2026

CVE-2021-20022

SonicWall Email Security Unrestricted Upload of File Vulnerability

CVSS

7.2

Alto

EPSS

16.5%

p97

KEV

SÍ

3 nov 2021

Exploit Today

0-100

Publicado: 9 abr 2021 · Última mod.: 12 ago 2026 · CWE-434

EPSS · 30d

16.5%EPSS · 30 días16.5%

2026-08-022026-08-31

Ficha del catálogo KEV

Producto

SonicWall / SonicWall Email Security

Vulnerabilidad

SonicWall Email Security Unrestricted Upload of File Vulnerability

Añadido a KEV

3 nov 2021

Remediar antes de

17 nov 2021

Uso conocido en ransomware

Sí

Descripción resumida

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.

Acción requerida

Apply updates per vendor instructions.

Notas

https://nvd.nist.gov/vuln/detail/CVE-2021-20022

Descripción técnica

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.

Referencias oficiales

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