CVE intelligence and bounded remediation

CVE-2019-3929 — Crestron Multiple Products Command Injection Vulnerability

Critical CVSS 9.8 CISA KEV

The Crestron AM-100 firmware 1.6.0.2, Crestron AM-101 firmware 2.7.0.1, Barco wePresent WiPG-1000P firmware 2.3.0.10, Barco wePresent WiPG-1600W before firmware 2.4.1.19, Extron ShareLink 200/250 firmware 2.0.3.4, Teq AV IT WIPS710 firmware 1.1.0.7, SHARP PN-L703WA firmware 1.4.2.3, Optoma WPS-Pro firmware 1.0.0.5, Blackbox HD WPS firmware 1.0.0.5, InFocus LiteShow3 firmware 1.0.16, and InFocus LiteShow4 2.0.0.7 are vulnerable to command injection via the file_transfer.cgi HTTP endpoint. A remote, unauthenticated attacker can use this vulnerability to execute operating system commands as root.

Severity
Critical
CVSS
9.8 (3.1)
Published
2019-04-30
CISA KEV
Known exploited
Ecosystem
operating-system
Weaknesses
CWE-79, CWE-78

Affected products

  • crestron / am-100_firmware / 1.6.0.2
  • crestron / am-101_firmware / 2.7.0.2
  • barco / wepresent_wipg-1000p_firmware / 2.3.0.10
  • barco / wepresent_wipg-1600w_firmware
  • extron / sharelink_200_firmware / 2.0.3.4
  • extron / sharelink_250_firmware / 2.0.3.4

Showing 6 representative product identities from 12 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Command, code, expression, and template injection

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Check exposure

  • Trace untrusted values to process execution, interpreters, evaluators, template engines, dynamic imports, and administrative scripting features.
  • Determine whether the affected path is reachable across each trust boundary and which service account or host privilege it inherits.
  • Review configuration for optional execution features, unsafe compatibility modes, and shell invocation.

Remediate safely

  • Replace string-built commands or evaluated code with fixed operations and structured argument APIs that do not invoke a shell.
  • Use strict allowlists for operation identifiers and reject unexpected input before it reaches any interpreter.
  • Update the affected component and add inert regression tests covering metacharacters, encoding variants, and alternate request paths.

Authoritative sources

Complete CVE record and remediation plan

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