CASCACascade Atlas

Evidence dossier

CVE-2021-20016

A SQL-Injection vulnerability in the SonicWall SSLVPN SMA100 product allows a remote unauthenticated attacker to perform SQL query to access username password and other session…

Exploited in the wild (CISA KEV since Nov 3, 2021). NVD reports CVSS 3.1 9.8. EPSS estimates 40.0% exploit likelihood as of Aug 27, 2026.

82.5–83.5Priority evidence range
Evidence current through Aug 27, 2026, 6:09 PM UTC

As of Aug 27, 2026

Normalized restatement

A SQL-Injection vulnerability in the SonicWall SSLVPN SMA100 product allows a remote unauthenticated attacker to perform SQL query to access username password and other session related information. This vulnerability impacts SMA100 build version 10.x.

State
PUBLISHED
Published
Feb 3, 2021
Updated
Oct 21, 2025
Evidence coverage
97%

Evidence chronology

What was known when

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  1. Source dateSource date omittedFirst observed by CASCA
    CISA-ADP

    Record text: CISA ADP Vulnrichment

    Inspect raw assertion
    Field
    container
    Value
    CISA ADP Vulnrichment
    Original evidence ↗
  2. Source dateSource date omittedFirst observed by CASCA
    CVE Program

    Record text: CVE Program Container

    Inspect raw assertion
    Field
    container
    Value
    CVE Program Container
    Original evidence ↗
  3. Source dateSource date omittedFirst observed by CASCA
    sonicwall

    Record text: A SQL-Injection vulnerability in the SonicWall SSLVPN SMA100 product allows a remote unauthenticated attacker to perform SQL query to access username password and other session related information. This vulnerability impacts SMA100 build version 10.x.

    Inspect raw assertion
    Field
    container
    Value
    A SQL-Injection vulnerability in the SonicWall SSLVPN SMA100 product allows a remote unauthenticated attacker to perform SQL query to access username password and other session related information. This vulnerability impacts SMA100 build version 10.x.
    Original evidence ↗
  4. Source dateFirst observed by CASCA
    CISA KEV

    Exploitation cataloged: SonicWall SSLVPN SMA100 SQL Injection Vulnerability

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    SonicWall SSLVPN SMA100 SQL Injection Vulnerability
    Original evidence ↗
  5. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 40.04% probability · 98.52th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.400380000000; percentile 0.985230000000
    Original evidence ↗
ExploitationCatalog member

CISA KEV · catalog date Nov 3, 2021 · first observed Jul 19, 2026

Exploit likelihood40.04%

FIRST EPSS · score date Aug 27, 2026 · 98.5th percentile · first observed Aug 27, 2026

SeverityCVSS 9.8

NVD · CVSS 3.1 · first observed Jul 19, 2026 · same-version scores align in this snapshot

Evidence detail

Source limits and decisions

Why each evidence state has this value

casca-unknown-reasons-v1
Exploitation statusEvidence supported

Eligible evidence is present for this bounded claim.

Revision
evidence-policy-v1.1.0
Cutoff
Aug 27, 2026
Resolution
None
Exploit likelihoodEvidence supported

Eligible evidence is present for this bounded claim.

Revision
evidence-policy-v1.1.0
Cutoff
Aug 27, 2026
Resolution
None
Severity assessmentEvidence supported

Eligible evidence is present for this bounded claim.

Revision
casca-direct-cvss-eligibility-v1
Cutoff
Aug 27, 2026
Resolution
None
Affected productsSource-reported scope

The cited source assertion is retained while canonical product linkage remains open.

Revision
casca-factor-d-obligations-v1
Cutoff
Aug 27, 2026
Resolution
Resolve identity

Source comparison

Who said what

CISA-ADPIndependent enrichment
Record text

CISA ADP Vulnrichment

Inspect raw assertion
Field
container
Value
CISA ADP Vulnrichment
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CVE ProgramDerivative copy
Record text

CVE Program Container

Inspect raw assertion
Field
container
Value
CVE Program Container
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
sonicwallOriginal assertion
Record text

A SQL-Injection vulnerability in the SonicWall SSLVPN SMA100 product allows a remote unauthenticated attacker to perform SQL query to access username password and other session related information. This vulnerability impacts SMA100 build version 10.x.

Inspect raw assertion
Field
container
Value
A SQL-Injection vulnerability in the SonicWall SSLVPN SMA100 product allows a remote unauthenticated attacker to perform SQL query to access username password and other session related information. This vulnerability impacts SMA100 build version 10.x.
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CISA KEVOriginal assertion
Exploitation cataloged

SonicWall SSLVPN SMA100 SQL Injection Vulnerability

Inspect raw assertion
Field
observed_exploitation
Value
SonicWall SSLVPN SMA100 SQL Injection Vulnerability
Source dateFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

40.04% probability · 98.52th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.400380000000; percentile 0.985230000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →
11Underlying assertions
11Canonical products
6Target assertions
5Constraint assertions

Grouped from 11 configuration nodes in this exact snapshot. Visual grouping is navigational; asset exposure and root cause require cited evidence.

Identity source boundaries
  • Cpe dictionary1,775,266 records · observed through 2026-07-21T06:45:29.809Z27d65b0f-b718-4b4f-bb79-c47c68d09dfa
  • Cpe match643,502 records · observed through 2026-07-21T08:13:17.697Z955dae73-7302-438b-aee1-058d7cc5d48e

12 scope groups

sonicwall · source assertedSonicWallSonicWall SMA100Direct source scope
Affected: SMA100 build version 10.x
Source-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Inspect raw assertion[{"status": "affected", "version": "SMA100 build version 10.x"}]
NVD CPE · HARDWAREsonicwallsma_100Environmental constraint · 1 assertions
Version not applicableCanonical identity product-349188e8ecac2199c4169eb48afe470b41b1b7469fd20f2bbdaaa5ab0faaf3daLinked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:sonicwall:sma_100:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    7b164eb6-4ca0-46ef-986d-270968e87c5c
NVD CPE · OPERATING SYSTEMsonicwallsma_100_firmwareVulnerable target · 1 assertions
Any version (unconstrained) (>= 10.0.0.0, < 10.2.0.5-d-29sv)Canonical identity product-a8b3737755b99e9ccd56f32d5aa2a3a66c60913eafbef16330c88dc66e29f1dfLinked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:o:sonicwall:sma_100_firmware:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 0
    Logic
    OR
    Version bounds
    from including 10.0.0.0; through excluding 10.2.0.5-d-29sv
    Match ID
    5ed4cbfd-c82d-4ca3-8a15-4a461a432a81
NVD CPE · HARDWAREsonicwallsma_200Environmental constraint · 1 assertions
Version not applicableCanonical identity product-91e31bab8ca12568b55fbef81208d65415eb9ae4c788d26be09141b79c89fe9dLinked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:sonicwall:sma_200:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    0b190266-ad6f-401b-9b2e-061cdd539236
NVD CPE · OPERATING SYSTEMsonicwallsma_200_firmwareVulnerable target · 1 assertions
Version not applicableCanonical identity product-1a893bd70f781870bc12b4b23d779710e6905e394bbc481fb889b05ce4182e74Linked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:o:sonicwall:sma_200_firmware:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    1 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    9b74d223-a74b-42ee-a005-c07cc2a1f92c
NVD CPE · HARDWAREsonicwallsma_210Environmental constraint · 1 assertions
Version not applicableCanonical identity product-550c36468c01a04863339c98e9cf24a57015da41e26d7cfe3817f5627349f033Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:sonicwall:sma_210:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    2 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    51587338-4a5f-41fc-9497-743f061947c2
NVD CPE · OPERATING SYSTEMsonicwallsma_210_firmwareVulnerable target · 1 assertions
Version not applicableCanonical identity product-26a307663a0d7d21d37685d5626bda794a31e21aa834b2d2545700514a0e4c1bLinked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:o:sonicwall:sma_210_firmware:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    2 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    69495233-d283-414c-a32c-9fbaf726cf1e
NVD CPE · HARDWAREsonicwallsma_400Environmental constraint · 1 assertions
Version not applicableCanonical identity product-281c97c08cce404bae4214669fa0d9b53f5e61e0badba682846d190c941a89dfLinked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:sonicwall:sma_400:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    3 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    9d728332-10c9-4508-b720-569d44e99543
NVD CPE · OPERATING SYSTEMsonicwallsma_400_firmwareVulnerable target · 1 assertions
Version not applicableCanonical identity product-e8581ca167a037abd2310f553d0f4f5493779f3b17ce222e83b9e7f474047868Linked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:o:sonicwall:sma_400_firmware:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    3 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    e791012d-4096-4978-950a-5b482f714a47
NVD CPE · HARDWAREsonicwallsma_410Environmental constraint · 1 assertions
Version not applicableCanonical identity product-7fe9cf3dc83085f07a35eb26b64c02c3a3315073c07277a9510b70c9dd839ef5Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:sonicwall:sma_410:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    4 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    9dfb8fbc-ffa4-4526-b306-d5692a43dc9e
NVD CPE · OPERATING SYSTEMsonicwallsma_410_firmwareVulnerable target · 1 assertions
Version not applicableCanonical identity product-a7f75ceec8c377c339cb86a182bbed18843ccfe642ca6bfccc536cc48e24fa59Linked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:o:sonicwall:sma_410_firmware:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    4 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    852af172-a8e4-463b-8503-f31dd0e62bc7
NVD CPE · APPLICATIONsonicwallsma_500vVulnerable target · 1 assertions
Version not applicableCanonical identity product-7108dc9ff86084e70b7648f009224f7d219ce93d05a4a9854e23856d6d2ae6bbLinked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:a:sonicwall:sma_500v:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    5 · node/0 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    75db297f-6686-46cd-83d4-608013568d81

Affected-product evidence

Accepted scope and product mapping

6 canonical links · 1 source-reported links

Mapping establishedEvidence supported

vendor-88ea7b4aa6d07152b297937bc7e73efc70d62904e8122e245a64c5b028d9fab0 · product-1a893bd70f781870bc12b4b23d779710e6905e394bbc481fb889b05ce4182e74

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
0efa2ce7-f1b2-43a4-aab5-b5edfda788aa
Mapping establishedEvidence supported

vendor-88ea7b4aa6d07152b297937bc7e73efc70d62904e8122e245a64c5b028d9fab0 · product-26a307663a0d7d21d37685d5626bda794a31e21aa834b2d2545700514a0e4c1b

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
018b7ef9-1808-4907-b023-eeb3e5ba58dc
Mapping establishedEvidence supported

vendor-88ea7b4aa6d07152b297937bc7e73efc70d62904e8122e245a64c5b028d9fab0 · product-7108dc9ff86084e70b7648f009224f7d219ce93d05a4a9854e23856d6d2ae6bb

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
16770abc-dccd-4593-b912-585ffd694a9f
Mapping establishedEvidence supported

vendor-88ea7b4aa6d07152b297937bc7e73efc70d62904e8122e245a64c5b028d9fab0 · product-a7f75ceec8c377c339cb86a182bbed18843ccfe642ca6bfccc536cc48e24fa59

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
796b5dc8-117e-4971-af72-518c0bbba321
Mapping establishedEvidence supported

vendor-88ea7b4aa6d07152b297937bc7e73efc70d62904e8122e245a64c5b028d9fab0 · product-a8b3737755b99e9ccd56f32d5aa2a3a66c60913eafbef16330c88dc66e29f1df

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
c34defb3-8fd2-4b7f-86fb-471c8d03ad07
Mapping establishedEvidence supported

vendor-88ea7b4aa6d07152b297937bc7e73efc70d62904e8122e245a64c5b028d9fab0 · product-e8581ca167a037abd2310f553d0f4f5493779f3b17ce222e83b9e7f474047868

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
a733aba2-b976-454b-8b59-ea26720fdff2
Source-reported scopeSource-reported scope

Canonical linkage remains open; the cited source assertion is retained below.

Vendor specified only by source · Product specified only by source

Source class
Direct cve affected
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
9236b9ab-35b2-4ba3-ae40-e154b7ca92cf

Assessments

CVSS by origin

9.8
NVDCVSS 3.1 · role Primary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5
NVDCVSS 2.0 · role Primary · priority eligiblevalid_matchAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8
CVE Program sourceCVSS 3.1 · role Secondary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
9.8
CISA-ADPCVSS 3.1 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Direct CVE/CNA normalized decisions

9.8Priority eligible

CISA-ADP

CVSS 3.1 · Secondary · Independent enrichment · rank 2

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Validation
Valid match
Recomputed
9.8
Decision reason
Evidence supported
Policy
casca-direct-cvss-eligibility-v1

Assessments are retained side by side under closed precedence. Cascade never averages CVSS.

Evidence boundaries

  • 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; remaining scope stays source-scoped.
  • NVD-carried upstream facts remain derivative; independent corroboration requires a separately authored source.
  • 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.
  • Core replay supports the active and immediately prior generation; retrospective valid-at replay is deferred.
  • OSV aggregation and OSV-converted NVD material are not independent corroboration.
  • Red Hat facts are vendor assertions for the exact supplied products.
  • Nonmembership and not-yet-observed states are not proof of safety.