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Vulnerability record · CVE-2021-20026 · published 27 May 2021

CVE-2021-20026: Sonicwall network security manager os command injection vulnerability

Sonicwall · Network Security Manager

A vulnerability in the SonicWall NSM On-Prem product allows an authenticated attacker to perform OS command injection using a crafted HTTP request. This vulnerability affects NSM On-Prem 2.2.0-R10 and earlier versions.

8.8 CVSS 3.1 High EPSS 12% · top 4.1% CWE-78 · OS command injection
8.8CVSS 3.1 base score, v2 9.0
12%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

A vulnerability in the SonicWall NSM On-Prem product allows an authenticated attacker to perform OS command injection using a crafted HTTP request. This vulnerability affects NSM On-Prem 2.2.0-R10 and earlier versions.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0014 Vendor Advisory
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0014 Vendor Advisory

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Source: NIST National Vulnerability Database (record CVE-2021-20026), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.