How severe is CVE-2021-20018?

CVE-2021-20018 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.

Is CVE-2021-20018 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-20018?

CVE-2021-20018 affects Sonicwall Sma100 Firmware. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-20018?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-20018 published?

CVE-2021-20018 was published on 2021-03-13 and last updated on 2026-06-17.

CVE-2021-20018

CVE-2021-20018 is a medium-severity vulnerability in Sonicwall Sma100 Firmware with a CVSS 3.x base score of 4.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-287.

Key facts

Severity: Medium (CVSS 3.x base score 4.9)
CVSS v2: 4.0
EPSS exploit prediction: 1% (49th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Sonicwall Sma100 Firmware
Published: 2021-03-13
Last modified: 2026-06-17

Description

A post-authenticated vulnerability in SonicWall SMA100 allows an attacker to export the configuration file to the specified email address. This vulnerability impacts SMA100 version 10.2.0.5 and earlier.

Frequently asked questions

What is CVE-2021-20018?: A post-authenticated vulnerability in SonicWall SMA100 allows an attacker to export the configuration file to the specified email address. This vulnerability impacts SMA100 version 10.2.0.5 and earlier.
How severe is CVE-2021-20018?: CVE-2021-20018 has a CVSS 3.x base score of 4.9, rated medium severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability none.
Is CVE-2021-20018 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (49th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-20018?: CVE-2021-20018 affects Sonicwall Sma100 Firmware. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-20018?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-20018 published?: CVE-2021-20018 was published on 2021-03-13 and last updated on 2026-06-17.

References

https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0005

Affected products (1)

cpe:2.3:o:sonicwall:sma100_firmware:*:*:*:*:*:*:*:*

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