What’s Vulnerable › Vulnerabilities

CVE-2021-20026

• Severity: high (CVSS 8.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 11.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-05-27 · updated 2026-06-17
• Weakness: CWE-78

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.

Affected products

• SonicWall Network Security Manager: before 2.2.0; 2.2.0, 2.2.0-r10 — fixed in 2.2.0

How to fix

Upgrade to a fixed version: SonicWall Network Security Manager 2.2.0. Check the vendor advisory for mitigations.

References

• https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0014
• https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0014

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