CVE intelligence and bounded remediation

CVE-2015-3953 — Pifzer Plum A+ Infusion System Firmware security vulnerability

Critical CVSS 9.8

Hard-coded accounts may be used to access Hospira Plum A+ Infusion System version 13.4 and prior, Plum A+3 Infusion System version 13.6 and prior, and Symbiq Infusion System, version 3.13 and prior. Hospira recommends that customers close Port 20/FTP and Port 23/TELNET on the affected devices. Hospira has also released the Plum 360 Infusion System which is not vulnerable to this issue.

Severity
Critical
CVSS
9.8 (3.0)
Published
2019-03-25
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-259, CWE-798

Affected products

  • pifzer / plum_a+_infusion_system_firmware
  • pifzer / plum_a+3_infusion_system_firmware
  • pifzer / symbiq_infusion_system_firmware

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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