CVE intelligence and bounded remediation

CVE-2019-7642 — D-Link routers with the mydlink feature have some web interfaces without authentication requirements

High CVSS 7.5

D-Link routers with the mydlink feature have some web interfaces without authentication requirements. An attacker can remotely obtain users' DNS query logs and login logs. Vulnerable targets include but are not limited to the latest firmware versions of DIR-817LW (A1-1.04), DIR-816L (B1-2.06), DIR-816 (B1-2.06?), DIR-850L (A1-1.09), and DIR-868L (A1-1.10).

Severity
High
CVSS
7.5 (3.1)
Published
2019-03-25
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-306

Affected products

  • dlink / dir-817lw_firmware / 1.04
  • dlink / dir-816l_firmware / 2.06
  • dlink / dir-816_firmware / 2.06
  • dlink / dir-850l_firmware / 1.09
  • dlink / dir-868l_firmware / 1.10

Matched remediation archetype

Authentication bypass and missing authentication

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Check exposure

  • Map every affected endpoint and protocol path, including alternate ports, legacy routes, recovery flows, service accounts, and machine-to-machine access.
  • Confirm which deployments enable the affected authentication mode and whether the interface is reachable from untrusted networks.
  • Review session, token, credential, and proxy trust configuration without attempting account takeover.

Remediate safely

  • Apply the supported fix and centralize fail-closed authentication before protected request handling.
  • Remove default or embedded credentials, rotate affected secrets and sessions, and bind authentication decisions to the intended audience and channel.
  • Add negative tests for alternate routes, malformed or absent credentials, recovery flows, and proxy-derived identity.

Authoritative sources

Complete CVE record and remediation plan

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