CVE intelligence and bounded remediation

CVE-2019-3927 — Crestron Am-100 Firmware security vulnerability

Critical CVSS 9.8

Crestron AM-100 with firmware 1.6.0.2 and AM-101 with firmware 2.7.0.2 anyone can change the administrator and moderator passwords via the iso.3.6.1.4.1.3212.100.3.2.8.1 and iso.3.6.1.4.1.3212.100.3.2.8.2 OIDs. A remote, unauthenticated attacker can use this vulnerability to change the admin or moderator user's password and gain access to restricted areas on the HTTP interface.

Severity
Critical
CVSS
9.8 (3.1)
Published
2019-04-30
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-284, CWE-287

Affected products

  • crestron / am-100_firmware / 1.6.0.2
  • crestron / am-101_firmware / 2.7.0.2

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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