CASCACascade Atlas

Evidence dossier

CVE-2018-14558

An issue was discovered on Tenda AC7 devices with firmware through V15.03.06.44_CN(AC7), AC9 devices with firmware through V15.03.05.19(6318)_CN(AC9), and AC10 devices with…

Exploited in the wild (CISA KEV since Nov 3, 2021). NVD reports CVSS 3.1 9.8. EPSS estimates 8.7% exploit likelihood as of Aug 27, 2026.

74.5–75.7Priority evidence range
Evidence current through Aug 27, 2026, 6:09 PM UTC

As of Aug 27, 2026

Normalized restatement

An issue was discovered on Tenda AC7 devices with firmware through V15.03.06.44_CN(AC7), AC9 devices with firmware through V15.03.05.19(6318)_CN(AC9), and AC10 devices with firmware through V15.03.06.23_CN(AC10). A command Injection vulnerability allows attackers to execute arbitrary OS commands via a crafted goform/setUsbUnload request. This occurs because the "formsetUsbUnload" function executes a dosystemCmd function with untrusted input.

State
PUBLISHED
Published
Oct 30, 2018
Updated
Oct 21, 2025
Evidence coverage
96%

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: An issue was discovered on Tenda AC7 devices with firmware through V15.03.06.44_CN(AC7), AC9 devices with firmware through V15.03.05.19(6318)_CN(AC9), and AC10 devices with firmware through V15.03.06.23_CN(AC10). A command Injection vulnerability allows attackers to execute arbitrary OS commands via a crafted goform/setUsbUnload request. This occurs because the "formsetUsbUnload" function executes a dosystemCmd function with untrusted input.

    Inspect raw assertion
    Field
    container
    Value
    An issue was discovered on Tenda AC7 devices with firmware through V15.03.06.44_CN(AC7), AC9 devices with firmware through V15.03.05.19(6318)_CN(AC9), and AC10 devices with firmware through V15.03.06.23_CN(AC10). A command Injection vulnerability allows attackers to execute arbitrary OS commands via a crafted goform/setUsbUnload request. This occurs because the "formsetUsbUnload" function executes a dosystemCmd function with untrusted input.
    Original evidence ↗
  4. Source dateFirst observed by CASCA
    CISA KEV

    Exploitation cataloged: Tenda AC7, AC9, and AC10 Routers Command Injection Vulnerability

    Inspect raw assertion
    Field
    observed_exploitation
    Value
    Tenda AC7, AC9, and AC10 Routers Command Injection Vulnerability
    Original evidence ↗
  5. Source dateFirst observed by CASCA
    FIRST EPSS

    EPSS score: 8.67% probability · 94.72th percentile

    Inspect raw assertion
    Field
    model_probability
    Value
    Probability 0.086720000000; percentile 0.947200000000
    Original evidence ↗
ExploitationCatalog member

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

Exploit likelihood8.67%

FIRST EPSS · score date Aug 27, 2026 · 94.7th 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 ↗
mitreOriginal assertion
Record text

An issue was discovered on Tenda AC7 devices with firmware through V15.03.06.44_CN(AC7), AC9 devices with firmware through V15.03.05.19(6318)_CN(AC9), and AC10 devices with firmware through V15.03.06.23_CN(AC10). A command Injection vulnerability allows attackers to execute arbitrary OS commands via a crafted goform/setUsbUnload request. This occurs because the "formsetUsbUnload" function executes a dosystemCmd function with untrusted input.

Inspect raw assertion
Field
container
Value
An issue was discovered on Tenda AC7 devices with firmware through V15.03.06.44_CN(AC7), AC9 devices with firmware through V15.03.05.19(6318)_CN(AC9), and AC10 devices with firmware through V15.03.06.23_CN(AC10). A command Injection vulnerability allows attackers to execute arbitrary OS commands via a crafted goform/setUsbUnload request. This occurs because the "formsetUsbUnload" function executes a dosystemCmd function with untrusted input.
Source dateSource date omittedFirst observed by CASCAOriginal evidence ↗
CISA KEVOriginal assertion
Exploitation cataloged

Tenda AC7, AC9, and AC10 Routers Command Injection Vulnerability

Inspect raw assertion
Field
observed_exploitation
Value
Tenda AC7, AC9, and AC10 Routers Command Injection Vulnerability
Source dateFirst observed by CASCAOriginal evidence ↗
FIRST EPSSOriginal assertion
EPSS score

8.67% probability · 94.72th percentile

Inspect raw assertion
Field
model_probability
Value
Probability 0.086720000000; percentile 0.947200000000
Source dateFirst observed by CASCAOriginal evidence ↗

Applicability

Cited product scope

Trace impact →
6Underlying assertions
6Canonical products
3Target assertions
3Constraint assertions

Grouped from 6 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

7 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 · HARDWAREtendaac10Environmental constraint · 1 assertions
Version not applicableCanonical identity product-f3ff2867a7ad6d9f1ccf69fda7d6125758bd54fff6fbb25c7e61f7d9e2c7ed6bLinked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:tenda:ac10:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    2 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    b9e0489c-31d5-43c4-b15d-1d88119ef226
NVD CPE · OPERATING SYSTEMtendaac10_firmwareVulnerable target · 1 assertions
Any version (unconstrained) (<= 15.03.06.23_cn)Canonical identity product-cf7cfb81188c567122481dfb560fe63d8e10c5f862097579b7bbc029259c4bb4Linked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:o:tenda:ac10_firmware:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    2 · node/0 · match 0
    Logic
    OR
    Version bounds
    through including 15.03.06.23_cn
    Match ID
    9bde03d1-5d87-4fcd-bb03-d483ab9bc186
NVD CPE · HARDWAREtendaac7Environmental constraint · 1 assertions
Version not applicableCanonical identity product-0f4edae44ab553eeec833b1264a3a63d0e59069b0baa49f7da8f7e1a5c90b2f5Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:tenda:ac7:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    0 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    a3bee979-5bf3-48ed-af42-0546d4f896e9
NVD CPE · OPERATING SYSTEMtendaac7_firmwareVulnerable target · 1 assertions
Any version (unconstrained) (<= 15.03.06.44_cn)Canonical identity product-37b508b6d44a4306849ac119a8ec1576c64f4068bcdd0bd36f71caf2734eb52eLinked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:o:tenda:ac7_firmware:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    0 · node/0 · match 0
    Logic
    OR
    Version bounds
    through including 15.03.06.44_cn
    Match ID
    b16592ce-98a8-478a-94e1-df628ade67e7
NVD CPE · HARDWAREtendaac9Environmental constraint · 1 assertions
Version not applicableCanonical identity product-303e2037773e925d7582250ef85c4c3b8715c78a3a4d9f6b9c932621ca7dbed9Linked exact
Scope constrained
Inspect raw assertion
  1. cpe:2.3:h:tenda:ac9:-:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Environmental constraint
    Configuration
    1 · node/1 · match 0
    Logic
    OR
    Version bounds
    No explicit bounds
    Match ID
    2fd1430e-dc2e-4042-9389-1fd90ecdbe4d
NVD CPE · OPERATING SYSTEMtendaac9_firmwareVulnerable target · 1 assertions
Any version (unconstrained) (<= 15.03.05.19\(6318\)_cn)Canonical identity product-f24974b9cc73e6c4d63d68cd7ea9ea8063a17cf8ed5797650992d4f8bcf11634Linked exact
Scope supported
Inspect raw assertion
  1. cpe:2.3:o:tenda:ac9_firmware:*:*:*:*:*:*:*:*
    Official link
    Linked exact
    Role
    Vulnerable target
    Configuration
    1 · node/0 · match 0
    Logic
    OR
    Version bounds
    through including 15.03.05.19\(6318\)_cn
    Match ID
    73d523bb-7eb3-4125-90c4-4c85f4ae1815

Affected-product evidence

Accepted scope and product mapping

3 canonical links · 1 source-reported links

Mapping establishedEvidence supported

vendor-8fc029e6acdb48e79b9673987159fbac0bcbf5c6bae97f68ccb2f76285fcd1b5 · product-37b508b6d44a4306849ac119a8ec1576c64f4068bcdd0bd36f71caf2734eb52e

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
ad4803b1-c60f-49b4-93e9-f36edc92586b
Mapping establishedEvidence supported

vendor-8fc029e6acdb48e79b9673987159fbac0bcbf5c6bae97f68ccb2f76285fcd1b5 · product-cf7cfb81188c567122481dfb560fe63d8e10c5f862097579b7bbc029259c4bb4

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
a17d1649-98d7-4ce3-9739-501ee967fb5d
Mapping establishedEvidence supported

vendor-8fc029e6acdb48e79b9673987159fbac0bcbf5c6bae97f68ccb2f76285fcd1b5 · product-f24974b9cc73e6c4d63d68cd7ea9ea8063a17cf8ed5797650992d4f8bcf11634

Source class
Nvd cpe vulnerable target
Assertions
1
Mapping revision
cpe23-exact-mapping-v1
Observed cutoff
Aug 27, 2026
Retained assertion IDs
6756bf86-7af9-47e1-83d9-edca26cdfb89
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
b1275d93-0e94-4c90-b120-3b1975662e7c

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
10.0
NVDCVSS 2.0 · role Primary · priority eligiblevalid_matchAV:N/AC:L/Au:N/C:C/I:C/A:C
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.