CVE-2021-20035

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Summary

CVECVE-2021-20035
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2021-09-27 18:15:00 UTC
Updated2021-10-06 17:29:00 UTC
DescriptionImproper neutralization of special elements in the SMA100 management interface allows a remote authenticated attacker to inject arbitrary commands as a 'nobody' user which potentially leads to DoS.

Risk And Classification

EPSS: 0.039670000 probability, percentile 0.883230000 (date 2026-04-01)

CISA KEV: Listed on 2025-04-16; due 2025-05-07; ransomware use Unknown

Problem Types: CWE-78

CISA Known Exploited Vulnerability

VendorSonicWall
ProductSMA100 Appliances
NameSonicWall SMA100 Appliances OS Command Injection Vulnerability
Required ActionApply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Noteshttps://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0022 ; https://nvd.nist.gov/vuln/detail/CVE-2021-20035

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Hardware Sonicwall Sma 200 - All All All
Operating System Sonicwall Sma 200 Firmware All All All All
Operating System Sonicwall Sma 200 Firmware All All All All
Operating System Sonicwall Sma 200 Firmware All All All All
Hardware Sonicwall Sma 210 - All All All
Operating System Sonicwall Sma 210 Firmware All All All All
Operating System Sonicwall Sma 210 Firmware All All All All
Operating System Sonicwall Sma 210 Firmware All All All All
Hardware Sonicwall Sma 400 - All All All
Operating System Sonicwall Sma 400 Firmware All All All All
Operating System Sonicwall Sma 400 Firmware All All All All
Operating System Sonicwall Sma 400 Firmware All All All All
Hardware Sonicwall Sma 410 - All All All
Operating System Sonicwall Sma 410 Firmware All All All All
Operating System Sonicwall Sma 410 Firmware All All All All
Operating System Sonicwall Sma 410 Firmware All All All All
Application Sonicwall Sma 500v All All All All
Application Sonicwall Sma 500v All All All All
Application Sonicwall Sma 500v All All All All

References

ReferenceSourceLinkTags
Security Advisory CONFIRM psirt.global.sonicwall.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
CISA Known Exploited Vulnerabilities catalog CISA www.cisa.gov kev
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