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Unrated severityCISA KEVNVD Advisory· Published Apr 9, 2021· Updated Oct 21, 2025

CVE-2021-20021

CVE-2021-20021

Description

A vulnerability in the SonicWall Email Security version 10.0.9.x allows an attacker to create an administrative account by sending a crafted HTTP request to the remote host.

Affected products

2
  • SonicWall/Email Securityllm-fuzzy2 versions
    = 10.0.9.x+ 1 more
    • (no CPE)range: = 10.0.9.x
    • (no CPE)range: 10.0.9 and earlier

Patches

Vulnerability mechanics

References

1

News mentions

0

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