CVE-2021-20035

mediumpriority · act · 90OT risk · criticalKEV · exploitedEPSS 0.042 · 91 %ileEURUUS

grimoire priorityP0 · Act now

Exploitable?

Yes · in the wild

CISA KEV

Likely / severe?

4.18% (91st) EPSS

CVSS 6.8 · medium

Is it mine?

36 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · fstec_bdu

added 2025-04-16remediate by 2025-05-07

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

EPSS · scored 2026-10-22

SonicWall SMA100 Appliances OS Command Injection Vulnerability

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.

cvss

Technical severity, 0–10. One row per scoring source.

7.2

010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–high · 6.5–7.2

v2.06.8mediumAV:N/AC:L/Au:S/C:N/I:N/A:Cprimary · NVD / NIST USexploitability 8 · impact 6.9

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 3.6

v3.17.2highAV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:Hsecondary · FSTEC (BDU) RU

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondary · ENISA EU

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:Hsecondaryexploitability 2.8 · impact 3.6

v3.16.5mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:Hsecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: active · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-78USprimaryCWE-79US

ATT&CK techniques

ATT&CK techniques this enables or maps to.

affected products (36)

Products and version ranges known to be affected.

SonicWall SMA100≤ 10.2.1.0-17sv and earlierenisa_euvdEU
SonicWall SMA100≤ 9.0.0.10-28sv and earlierenisa_euvdEU
SonicWall SMA100≤ 10.2.0.7-34sv and earlierenisa_euvdEU
SonicWall SMA 100≤ 9.0.0.10-28svfstec_bduRU
SonicWall SMA 100≤ 10.2.1.0-17svfstec_bduRU
SonicWall SMA 100≤ 10.2.0.7-34svfstec_bduRU
SonicWall SMA 200≤ 10.2.0.7-34svfstec_bduRU
SonicWall SMA 200≤ 10.2.1.0-17svfstec_bduRU
SonicWall SMA 200≤ 9.0.0.10-28svfstec_bduRU
SonicWall SMA 210≤ 9.0.0.10-28svfstec_bduRU
SonicWall SMA 210≤ 10.2.0.7-34svfstec_bduRU
SonicWall SMA 210≤ 10.2.1.0-17svfstec_bduRU
SonicWall SMA 400≤ 10.2.0.7-34svfstec_bduRU
SonicWall SMA 400≤ 10.2.1.0-17svfstec_bduRU
SonicWall SMA 400≤ 9.0.0.10-28svfstec_bduRU
SonicWall SMA 410≤ 10.2.0.7-34svfstec_bduRU
SonicWall SMA 410≤ 10.2.1.0-17svfstec_bduRU
SonicWall SMA 410≤ 9.0.0.10-28svfstec_bduRU
SonicWall SMA 500v≤ 10.2.0.7-34svfstec_bduRU
SonicWall SMA 500v≤ 9.0.0.10-28svfstec_bduRU

showing 20 of 36

also known as (4)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd fstec_bdu NVD CVE.org MITRE

published 2021-09-27modified 2026-06-17

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references (6)

External citations — patches, advisories, analysis.

scry

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