How severe is CVE-2015-3956?

CVE-2015-3956 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2015-3956 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-3956?

CVE-2015-3956 primarily affects Pifzer Plum A+ Infusion System Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2015-3956?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2015-3956 published?

CVE-2015-3956 was published on 2019-03-25 and last updated on 2026-06-17.

CVE-2015-3956

CVE-2015-3956 is a critical-severity vulnerability in Pifzer Plum A+ Infusion System Firmware with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-345.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 1% (57th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-345
Affected product: Pifzer Plum A+ Infusion System Firmware
Published: 2019-03-25
Last modified: 2026-06-17

Description

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 accept drug libraries, firmware updates, pump commands, and unauthorized configuration changes from unauthenticated devices on the host network. 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.

Frequently asked questions

What is CVE-2015-3956?: 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 accept drug libraries, firmware updates, pump commands, and unauthorized configuration changes from unauthenticated devices on the host network. 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.
How severe is CVE-2015-3956?: CVE-2015-3956 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2015-3956 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (57th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-3956?: CVE-2015-3956 primarily affects Pifzer Plum A+ Infusion System Firmware. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2015-3956?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2015-3956 published?: CVE-2015-3956 was published on 2019-03-25 and last updated on 2026-06-17.

References

https://ics-cert.us-cert.gov/advisories/ICSA-15-161-01

Affected products (3)

cpe:2.3:o:pifzer:plum_a\+_infusion_system_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:pifzer:plum_a\+3_infusion_system_firmware:*:*:*:*:*:*:*:*
cpe:2.3:o:pifzer:symbiq_infusion_system_firmware:*:*:*:*:*:*:*:*

More vulnerabilities in Pifzer Plum A+ Infusion System Firmware

CVE-2015-3954 — Critical (CVSS 9.8): Hospira Plum A+ Infusion System version 13.4 and prior, Plum A+3 Infusion System version 13.6 and prior, and Symbiq…
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CVE-2015-3952 — High (CVSS 7.5): Wireless keys are stored in plain text on Hospira Plum A+ Infusion System version 13.4 and prior, Plum A+3 Infusion…

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