Sonicwall SMA 100 Series Security Update

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Date of Notice: 12/8/2021

Action Level - Critical


MCNC would like to make you aware of a group of vulnerabilities affecting Sonicwall SMA 100 Series devices. These vulnerabilities could allow an attacker to bypass authentication and execute arbitrary code as root user, upload arbitrary files, or cause a denial of service. Several of the vulnerabilities are critical impact, and Sonicwall recommends updating impacted devices as soon as possible.

Affected Devices

  • SMA 100 Series (SMA 100, 200, 210, 400, 410, 500v)

Affected Firmware versions


First Fixed Firmware versions


Attack Vector

An attacker with remote or local access to an unpatched device.

Attack Feasibility

There is currently no evidence that the vulnerabilities are being exploited in the wild.


There are no known mitigations or workarounds to address this vulnerability.


Sonicwall has released firmware updates to remediate these vulnerabilities. Due to the critical nature, they recommend immediate patching

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