CASCACascade Atlas

Evidence dossier

CVE-2017-6334

dnslookup.cgi on NETGEAR DGN2200 devices with firmware through 10.0.0.50 allows remote authenticated users to execute arbitrary OS commands via shell metacharacters in the…

Exploited in the wild (CISA KEV since Mar 25, 2022). NVD reports CVSS 3.1 8.8. EPSS estimates 72.2% exploit likelihood as of Aug 26, 2026.

81.6–83.2Priority evidence range
Evidence current through Aug 27, 2026, 6:09 PM UTC

As of Aug 27, 2026

Normalized restatement

dnslookup.cgi on NETGEAR DGN2200 devices with firmware through 10.0.0.50 allows remote authenticated users to execute arbitrary OS commands via shell metacharacters in the host_name field of an HTTP POST request, a different vulnerability than CVE-2017-6077.

State
PUBLISHED
Published
Mar 6, 2017
Updated
Jan 12, 2026
Evidence coverage
92%

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
    mitre

    Record text: dnslookup.cgi on NETGEAR DGN2200 devices with firmware through 10.0.0.50 allows remote authenticated users to execute arbitrary OS commands via shell metacharacters in the host_name field of an HTTP POST request, a different vulnerability than CVE-2017-6077.

    Inspect raw assertion
    Field
    container
    Value
    dnslookup.cgi on NETGEAR DGN2200 devices with firmware through 10.0.0.50 allows remote authenticated users to execute arbitrary OS commands via shell metacharacters in the host_name field of an HTTP POST request, a different vulnerability than CVE-2017-6077.
    Original evidence ↗
  4. Source dateFirst observed by CASCA
    CISA KEV

    Exploitation cataloged: NETGEAR DGN2200 Devices OS Command Injection Vulnerability

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    NETGEAR DGN2200 Devices OS Command Injection Vulnerability
    Original evidence ↗
  5. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 72.2% probability · 99.39th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.721990000000; percentile 0.993860000000
    Original evidence ↗
ExploitationCatalog member

CISA KEV · catalog date Mar 25, 2022 · first observed Jul 19, 2026

Exploit likelihood72.20%

FIRST EPSS · score date Aug 26, 2026 · 99.4th percentile · first observed Aug 26, 2026

SeverityCVSS 8.8

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 ↗
mitreOriginal assertion
Record text

dnslookup.cgi on NETGEAR DGN2200 devices with firmware through 10.0.0.50 allows remote authenticated users to execute arbitrary OS commands via shell metacharacters in the host_name field of an HTTP POST request, a different vulnerability than CVE-2017-6077.

Inspect raw assertion
Field
container
Value
dnslookup.cgi on NETGEAR DGN2200 devices with firmware through 10.0.0.50 allows remote authenticated users to execute arbitrary OS commands via shell metacharacters in the host_name field of an HTTP POST request, a different vulnerability than CVE-2017-6077.
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CISA KEVOriginal assertion
Exploitation cataloged

NETGEAR DGN2200 Devices OS Command Injection Vulnerability

Inspect raw assertion
Field
observed_exploitation
Value
NETGEAR DGN2200 Devices OS Command Injection Vulnerability
Source dateFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

72.2% probability · 99.39th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.721990000000; percentile 0.993860000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →
5Underlying assertions
5Canonical products
1Target assertions
4Constraint assertions

Grouped from 2 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

6 scope groups

mitre · source assertedn/an/aDirect source scope
Affected: n/a
Source-reported scope

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

Inspect raw assertion[{"status": "affected", "version": "n/a"}]
NVD CPE · OPERATING SYSTEMnetgeardgn2200_series_firmwareVulnerable target · 1 assertions
Any version (unconstrained) (<= 10.0.0.50)Canonical identity product-508ba102c83160a1f932e14be4254ea0abc7f405137e2fe78a2bd1f4c68db6f7Linked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:o:netgear:dgn2200_series_firmware:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 0
    Logic
    OR
    Version bounds
    through including 10.0.0.50
    Match ID
    6100e877-446f-4f6c-a8d9-2bc545c2d95a
NVD CPE · HARDWAREnetgeardgn2200v1Environmental constraint · 1 assertions
Version not applicableCanonical identity product-ab3fff54c77210a8f7e869f1956bfa48b66a2078272b482929c8cd52548cde71Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:netgear:dgn2200v1:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    e8c6e7f8-958f-4131-83cf-4473e0b0eb71
NVD CPE · HARDWAREnetgeardgn2200v2Environmental constraint · 1 assertions
Version not applicableCanonical identity product-1309c87a16ad301bdb83f9340823baeca7532b90f3a1bfb809f2bb6586b26d3dLinked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:netgear:dgn2200v2:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 1
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    70bd93ff-d3f5-41d9-bb40-141e02ca3253
NVD CPE · HARDWAREnetgeardgn2200v3Environmental constraint · 1 assertions
Version not applicableCanonical identity product-41ef1e4f9fae681b1e2960fe0f339c777a5a658898c0454cdaba38654724e9ebLinked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:netgear:dgn2200v3:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 2
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    5a9566c3-855e-43b3-ab35-6bbce8d9aa60
NVD CPE · HARDWAREnetgeardgn2200v4Environmental constraint · 1 assertions
Version not applicableCanonical identity product-62f8d8296f6afa696a18779ca3931d98640b1cdb3a5d4763f94551c6dfcd3c5cLinked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:netgear:dgn2200v4:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 3
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    0be59214-c8a1-4337-a54c-e4e8c149b241

Affected-product evidence

Accepted scope and product mapping

1 canonical links · 1 source-reported links

Mapping establishedEvidence supported

vendor-e6bb97853bfb2ac91ae14d10c2c66badc0ed5b9045d86cd4261f6013a132d9c2 · product-508ba102c83160a1f932e14be4254ea0abc7f405137e2fe78a2bd1f4c68db6f7

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
cd6faff7-94bf-4663-a816-4bc1fc36c8cd
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
430d0c54-f2c5-4430-93aa-492439e6184d

Assessments

CVSS by origin

8.8
NVDCVSS 3.1 · role Primary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
9.0
NVDCVSS 2.0 · role Primary · priority eligiblevalid_matchAV:N/AC:L/Au:S/C:C/I:C/A:C
8.8
CVE Program sourceCVSS 3.1 · role Secondary · priority eligiblevalid_matchCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
8.8
CISA-ADPCVSS 3.1 · role unknown · display onlyDirect record assessment retained outside normalized eligibilityCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Direct CVE/CNA normalized decisions

8.8Priority eligible

CISA-ADP

CVSS 3.1 · Secondary · Independent enrichment · rank 2

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Validation
Valid match
Recomputed
8.8
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.