How severe is CVE-2015-3953?

CVE-2015-3953 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-2015-3953 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2015-3953?

CVE-2015-3953 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-2015-3953?

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-2015-3953 published?

CVE-2015-3953 was published on 2019-03-25 and last updated on 2026-06-17.

CVE-2015-3953

CVE-2015-3953 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-798.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 2% (78th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-798
Affected product: Pifzer Plum A+ Infusion System Firmware
Published: 2019-03-25
Last modified: 2026-06-17

Description

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.

Frequently asked questions

What is CVE-2015-3953?: 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.
How severe is CVE-2015-3953?: CVE-2015-3953 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-2015-3953 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (78th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2015-3953?: CVE-2015-3953 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-2015-3953?: 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-2015-3953 published?: CVE-2015-3953 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-2015-3956 — 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…
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…
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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