CVE intelligence and bounded remediation

CVE-2024-31810 — TOTOLINK EX200 V4.0.3c.7646_B20201211 was discovered to contain a hardcoded password for root at /etc/shadow.sample

Critical CVSS 9.8

TOTOLINK EX200 V4.0.3c.7646_B20201211 was discovered to contain a hardcoded password for root at /etc/shadow.sample.

Severity
Critical
CVSS
9.8 (3.1)
Published
2024-05-14
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-798, CWE-259

Affected products

  • totolink / ex200_firmware / 4.0.3c.7646_b20201211

Matched remediation archetype

Authentication bypass and missing authentication

This catalog composition supplies bounded fallback guidance. Explicitly reviewed curated workflows load with the complete record below.

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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