CASCACascade Atlas

Evidence dossier

CVE-2019-16920

CVE-2019-16920

84.5–100.0Priority evidence range
As known Jul 19, 2026, 5:00 AM UTCgen-56ccdaf9

Normalized restatement

Unauthenticated remote code execution occurs in D-Link products such as DIR-655C, DIR-866L, DIR-652, and DHP-1565. The issue occurs when the attacker sends an arbitrary input to a "PingTest" device common gateway interface that could lead to common injection. An attacker who successfully triggers the command injection could achieve full system compromise. Later, it was independently found that these are also affected: DIR-855L, DAP-1533, DIR-862L, DIR-615, DIR-835, and DIR-825.

State
PUBLISHED
Published
Sep 27, 2019
Updated
Oct 21, 2025
Evidence coverage
72%
CISA KEVCatalog member

The impacted product is end-of-life and should be disconnected if still in use.

FIRST EPSS100.00%

2026-07-18 · v2026.06.15 · percentile 100.0%

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

mitreoriginal assertion
container

Unauthenticated remote code execution occurs in D-Link products such as DIR-655C, DIR-866L, DIR-652, and DHP-1565. The issue occurs when the attacker sends an arbitrary input to a "PingTest" device common gateway interface that could lead to common injection. An attacker who successfully triggers the command injection could achieve full system compromise. Later, it was independently found that these are also affected: DIR-855L, DAP-1533, DIR-862L, DIR-615, DIR-835, and DIR-825.

CISA KEVoriginal assertion
observed_exploitation

D-Link Multiple Routers Command Injection Vulnerability

FIRST EPSSoriginal assertion
model_probability

Probability 0.999960000000; percentile 0.999880000000

Applicability

Cited product scope

Trace impact →
n/an/a
[{"status": "affected", "version": "n/a"}]unknown
Unknown vendorUnknown product
cpe:2.3:h:dlink:dap-1533:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:dlink:dhp-1565:ax:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:dlink:dir-615:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:dlink:dir-652:ax:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:dlink:dir-655:cx:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:dlink:dir-825:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:dlink:dir-835:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:dlink:dir-855l:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:dlink:dir-862l:-:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:h:dlink:dir-866l:ax:*:*:*:*:*:*:*constrained
Unknown vendorUnknown product
cpe:2.3:o:dlink:dap-1533_firmware:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:dlink:dhp-1565_firmware:*:*:*:*:*:*:*:*; end including 1.01supported
Unknown vendorUnknown product
cpe:2.3:o:dlink:dir-615_firmware:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:dlink:dir-652_firmware:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:dlink:dir-655_firmware:*:*:*:*:*:*:*:*; end including 3.02b05supported
Unknown vendorUnknown product
cpe:2.3:o:dlink:dir-825_firmware:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:dlink:dir-835_firmware:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:dlink:dir-855l_firmware:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:dlink:dir-862l_firmware:-:*:*:*:*:*:*:*supported
Unknown vendorUnknown product
cpe:2.3:o:dlink:dir-866l_firmware:*:*:*:*:*:*:*:*; end including 1.03b04supported

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
10.0
nvd@nist.govCVSS 2.0 · role PrimaryAV:N/AC:L/Au:N/C:C/I:C/A:C
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.