How severe is CVE-2019-4521?

CVE-2019-4521 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-2019-4521 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2019-4521?

CVE-2019-4521 primarily affects Ibm Cloud Pak System. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2019-4521?

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-2019-4521 published?

CVE-2019-4521 was published on 2019-12-10 and last updated on 2026-06-17.

CVE-2019-4521

CVE-2019-4521 is a critical-severity vulnerability in Ibm Cloud Pak System 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-1236.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 3% (84th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-1236
Affected product: Ibm Cloud Pak System
Published: 2019-12-10
Last modified: 2026-06-17

Description

Platform System Manager in IBM Cloud Pak System 2.3 is potentially vulnerable to CVS Injection. A remote attacker could execute arbitrary commands on the system, caused by improper validation of csv file contents. IBM X-Force ID: 165179.

Frequently asked questions

What is CVE-2019-4521?: Platform System Manager in IBM Cloud Pak System 2.3 is potentially vulnerable to CVS Injection. A remote attacker could execute arbitrary commands on the system, caused by improper validation of csv file contents. IBM X-Force ID: 165179.
How severe is CVE-2019-4521?: CVE-2019-4521 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-2019-4521 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (84th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2019-4521?: CVE-2019-4521 primarily affects Ibm Cloud Pak System. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2019-4521?: 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-2019-4521 published?: CVE-2019-4521 was published on 2019-12-10 and last updated on 2026-06-17.

References

Affected products (2)

cpe:2.3:a:ibm:cloud_pak_system:2.3:*:*:*:*:*:*:*
cpe:2.3:a:ibm:cloud_pak_system:2.3.0.1:*:*:*:*:*:*:*

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