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Weekly Signal
Live intelligence Updated 19 Aug 2026 · 12:58 UTC

D-Link, Dlink · Multiple Routers, Dap-1533 Firmware, Dhp-1565 Firmware +8 more

CVE-2019-16920

D-Link Multiple Routers Command Injection Vulnerability

Recommended action

Treat this as an immediate remediation priority. The impacted product is end-of-life and should be disconnected if still in use.

View response plan
CVSS9.8
EPSS100.0%
KEVYes
ExploitationConfirmed exploitation
PatchPatch or guidance available ↓

Assessment

Why it matters

CISA lists this vulnerability as known to be exploited; exploitation is confirmed; EPSS is 100.0%; technical severity is CVSS 9.8.

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.

Who should care

  • Teams operating Multiple Routers, Dap-1533 Firmware, Dhp-1565 Firmware +8 more
  • Vulnerability and exposure management teams
  • Security operations teams monitoring exploitation activity

Response plan

What I would do

  1. Confirm whether Multiple Routers, Dap-1533 Firmware, Dhp-1565 Firmware +8 more is present in the environment.
  2. Identify affected versions and establish whether vulnerable services are exposed or reachable.
  3. The impacted product is end-of-life and should be disconnected if still in use.
  4. Review relevant security telemetry for evidence of attempted or successful exploitation.
  5. Document the remediation decision and track it to verified completion.

Vendor remediation

Patch and remediation links

Use the vendor source below to confirm the correct fixed version, package or mitigation for your affected product.

Technical details

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CWE
CWE-78
Affected versions
D-Link Multiple Routers; Dlink Dap-1533 Firmware (Version: -); Dlink Dhp-1565 Firmware (End Including: 1.01); Dlink Dir-615 Firmware (Version: -); Dlink Dir-652 Firmware (Version: -); Dlink Dir-655 Firmware (End Including: 3.02b05); Dlink Dir-825 Firmware (Version: -); Dlink Dir-835 Firmware (Version: -)
Published
27 September 2019
Attack vector
Network
Privileges required
None
User interaction
None

Signal timeline

  1. CVE published
  2. Added to CISA KEV
  3. Latest EPSS score: 100.0%
  4. Signal calculated at 85

External references

Live public intelligence This assessment combines public-source evidence. Validate the affected product, version and exposure against your own environment before making a risk decision.