CASCACascade Atlas

Evidence dossier

CVE-2018-19949

CVE-2018-19949

68.6–89.4Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

If exploited, this command injection vulnerability could allow remote attackers to run arbitrary commands. QNAP has already fixed the issue in the following QTS versions. QTS 4.4.2.1231 on build 20200302; QTS 4.4.1.1201 on build 20200130; QTS 4.3.6.1218 on build 20200214; QTS 4.3.4.1190 on build 20200107; QTS 4.3.3.1161 on build 20200109; QTS 4.2.6 on build 20200109.

State
PUBLISHED
Published
Oct 28, 2020
Updated
Oct 21, 2025
Evidence coverage
72%
CISA KEVCatalog member

Apply updates per vendor instructions.

FIRST EPSS24.45%

2026-07-18 · v2026.06.15 · percentile 97.6%

Source stateConflict visible

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

qnaporiginal assertion
container

If exploited, this command injection vulnerability could allow remote attackers to run arbitrary commands. QNAP has already fixed the issue in the following QTS versions. QTS 4.4.2.1231 on build 20200302; QTS 4.4.1.1201 on build 20200130; QTS 4.3.6.1218 on build 20200214; QTS 4.3.4.1190 on build 20200107; QTS 4.3.3.1161 on build 20200109; QTS 4.2.6 on build 20200109.

CISA KEVoriginal assertion
observed_exploitation

QNAP NAS File Station Command Injection Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.244490000000; percentile 0.976300000000

Applicability

Cited product scope

Trace impact →
QNAP Systems Inc.QTS
[{"status": "affected", "version": "unspecified", "lessThan": "4.4.2.1231", "versionType": "custom"}]unknown
QNAP Systems Inc.QTS
[{"status": "affected", "version": "unspecified", "lessThan": "4.4.1.1201", "versionType": "custom"}]unknown
QNAP Systems Inc.QTS
[{"status": "affected", "version": "unspecified", "lessThan": "4.3.6.1218", "versionType": "custom"}]unknown
QNAP Systems Inc.QTS
[{"status": "affected", "version": "unspecified", "lessThan": "4.3.4.1190", "versionType": "custom"}]unknown
QNAP Systems Inc.QTS
[{"status": "affected", "version": "unspecified", "lessThan": "4.3.3.1161", "versionType": "custom"}, {"status": "affected", "version": "unspecified", "lessThan": "4.2.6", "versionType": "custom"}]unknown
Unknown vendorUnknown product
cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*; end excluding 4.2.6supported
Unknown vendorUnknown product
cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*; start including 4.3.1.0013; end excluding 4.3.3.1161supported
Unknown vendorUnknown product
cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*; start including 4.3.4; end excluding 4.3.4.1190supported
Unknown vendorUnknown product
cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*; start including 4.3.6; end excluding 4.3.6.1218supported
Unknown vendorUnknown product
cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*; start including 4.4.0; end excluding 4.4.1.1201supported
Unknown vendorUnknown product
cpe:2.3:o:qnap:qts:*:*:*:*:*:*:*:*; start including 4.4.2; end excluding 4.4.2.1231supported
Unknown vendorUnknown product
cpe:2.3:o:qnap:qts:4.2.6:-:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:qnap:qts:4.2.6:build_20170517:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:qnap:qts:4.2.6:build_20190322:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:qnap:qts:4.2.6:build_20190730:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:qnap:qts:4.2.6:build_20190921:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:qnap:qts:4.2.6:build_20191107:*:*:*:*:*:*supported

Assessments

CVSS by origin

9.8
nvd@nist.govCVSS 3.1 · role PrimaryCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
7.5
nvd@nist.govCVSS 2.0 · role PrimaryAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8
134c704f-9b21-4f2e-91b3-4a467353bcc0CVSS 3.1 · role SecondaryCVSS: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 unknownCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/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.