CVE-2021-20018Network attack vector

Configuration export to attacker-specified email address

Published Mar 13, 2021 · Updated Aug 3, 2024

Information exposure in SonicWall SMA 100 10.2.0.5 and earlier allows remote authenticated users to email an exported configuration. SonicWall has not published the affected handler or the validation failure that permits a caller-specified email destination. Exploitation requires a high-privileged authenticated session and causes the appliance configuration to be sent to an address selected by the attacker.

CVSS severity4.9
Medium
EPSS probability0.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information exposure in SonicWall SMA 100 10.2.0.5 and earlier allows remote authenticated users to email an exported configuration. SonicWall has not published the affected handler or the validation failure that permits a caller-specified email destination. Exploitation requires a high-privileged authenticated session and causes the appliance configuration to be sent to an address selected by the attacker.

The record

CVE
CVE-2021-20018
Published
Mar 13, 2021
Updated
Aug 3, 2024
Vendor
SonicWall
Product
Secure Mobile Access (SMA) 100 Series
Classifications
CWE-200, CWE-287, T1048
Attack vector
network
Privileges
admin

Timeline

How it unfolded

  1. Mar 13, 2021CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=10.2.0.5 and earlier

What conditions does exploitation require?

Attack vectornetwork
Required privilegesadmin

What is affected?

SonicWall · Secure Mobile Access (SMA) 100 Seriesversion=10.2.0.5 and earlier

Published CVSS scores

4.9NIST NVDCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N
4.0NIST NVDAV:N/AC:L/Au:S/C:N/I:P/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor
CWE-287Improper Authentication
T1048Exfiltration Over Alternative Protocol

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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