CASCACascade Atlas

Evidence dossier

CVE-2021-20035

CVE-2021-20035

60.2–75.9Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

Improper 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.

State
PUBLISHED
Published
Sep 27, 2021
Updated
Oct 21, 2025
Evidence coverage
85%
CISA KEVCatalog member

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

FIRST EPSS3.89%

2026-07-18 · v2026.06.15 · percentile 89.1%

Source stateNo scored conflict

Distinct CVSS assessments remain side by side; none are averaged.

Source comparison

Who said what

CISA-ADPindependent enrichment
container

CISA ADP Vulnrichment

CVEderivative copy
container

CVE Program Container

sonicwalloriginal assertion
container

Improper 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.

CISA KEVoriginal assertion
observed_exploitation

SonicWall SMA100 Appliances OS Command Injection Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.038900000000; percentile 0.890730000000

Applicability

Cited product scope

Trace impact →
SonicWallSMA100
[{"status": "affected", "version": "9.0.0.10-28sv and earlier"}, {"status": "affected", "version": "10.2.0.7-34sv and earlier"}, {"status": "affected", "version": "10.2.1.0-17sv and earlier"}]unknown
Unknown vendorUnknown product
cpe:2.3:a:sonicwall:sma_500v:*:*:*:*:*:*:*:*; end excluding 9.0.0.11-31svsupported
Unknown vendorUnknown product
cpe:2.3:a:sonicwall:sma_500v:*:*:*:*:*:*:*:*; start including 10.2.0.0; end excluding 10.2.0.8-37svsupported
Unknown vendorUnknown product
cpe:2.3:a:sonicwall:sma_500v:*:*:*:*:*:*:*:*; start including 10.2.1.0; end excluding 10.2.1.1-19svsupported
Unknown vendorUnknown product
cpe:2.3:h:sonicwall:sma_200:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:sonicwall:sma_210:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:sonicwall:sma_400:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:sonicwall:sma_410:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:sonicwall:sma_200_firmware:*:*:*:*:*:*:*:*; end excluding 9.0.0.11-31svsupported
Unknown vendorUnknown product
cpe:2.3:o:sonicwall:sma_200_firmware:*:*:*:*:*:*:*:*; start including 10.2.0.0; end excluding 10.2.0.8-37svsupported
Unknown vendorUnknown product
cpe:2.3:o:sonicwall:sma_200_firmware:*:*:*:*:*:*:*:*; start including 10.2.1.0; end excluding 10.2.1.1-19svsupported
Unknown vendorUnknown product
cpe:2.3:o:sonicwall:sma_210_firmware:*:*:*:*:*:*:*:*; end excluding 9.0.0.11-31svsupported
Unknown vendorUnknown product
cpe:2.3:o:sonicwall:sma_210_firmware:*:*:*:*:*:*:*:*; start including 10.2.0.0; end excluding 10.2.0.8-37svsupported
Unknown vendorUnknown product
cpe:2.3:o:sonicwall:sma_210_firmware:*:*:*:*:*:*:*:*; start including 10.2.1.0; end excluding 10.2.1.1-19svsupported
Unknown vendorUnknown product
cpe:2.3:o:sonicwall:sma_400_firmware:*:*:*:*:*:*:*:*; end excluding 9.0.0.11-31svsupported
Unknown vendorUnknown product
cpe:2.3:o:sonicwall:sma_400_firmware:*:*:*:*:*:*:*:*; start including 10.2.0.0; end excluding 10.2.0.8-37svsupported
Unknown vendorUnknown product
cpe:2.3:o:sonicwall:sma_400_firmware:*:*:*:*:*:*:*:*; start including 10.2.1.0; end excluding 10.2.1.1-19svsupported
Unknown vendorUnknown product
cpe:2.3:o:sonicwall:sma_410_firmware:*:*:*:*:*:*:*:*; end excluding 9.0.0.11-31svsupported
Unknown vendorUnknown product
cpe:2.3:o:sonicwall:sma_410_firmware:*:*:*:*:*:*:*:*; start including 10.2.0.0; end excluding 10.2.0.8-37svsupported
Unknown vendorUnknown product
cpe:2.3:o:sonicwall:sma_410_firmware:*:*:*:*:*:*:*:*; start including 10.2.1.0; end excluding 10.2.1.1-19svsupported

Assessments

CVSS by origin

6.5
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.8
nvd@nist.govCVSS 2.0 · role PrimaryAV:N/AC:L/Au:S/C:N/I:N/A:C
6.5
134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS 3.1 · role SecondaryCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
6.5
CISA-ADPCVSS 3.1 · role unknownCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

Limitations and unknowns

  • KEV membership is authoritative for the catalog, not proof of exposure in any environment.
  • EPSS is a dated model probability and not an individual-environment prediction.
  • Affected or fixed status applies only to the exact cited product and version scope; unresolved scope remains unknown.
  • NVD-carried upstream facts remain derivative and are not independent corroboration.
  • Only NVD metrics validated under the generation-bound calculator are Public Priority eligible; direct CVE record metrics remain display-only.
  • NVD CVSS source eligibility is closed: NVD-authored, exact record-source, or registered same-CVE container origin; unmapped sources remain display-only.
  • Factor D is unknown in Public Core because no accepted canonical mapping-obligation ledger is present.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.