How severe is CVE-2020-4521?

CVE-2020-4521 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-4521 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-4521?

CVE-2020-4521 affects Ibm Maximo Asset Management. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-4521?

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

When was CVE-2020-4521 published?

CVE-2020-4521 was published on 2020-09-15 and last updated on 2026-06-17.

CVE-2020-4521

CVE-2020-4521 is a high-severity vulnerability in Ibm Maximo Asset Management with a CVSS 3.x base score of 8.8. 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-502.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 9.0
EPSS exploit prediction: 6% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-502
Affected product: Ibm Maximo Asset Management
Published: 2020-09-15
Last modified: 2026-06-17

Description

IBM Maximo Asset Management 7.6.0 and 7.6.1 could allow a remote authenticated attacker to execute arbitrary code on the system, caused by an unsafe deserialization in Java. By sending specially-crafted request, an attacker could exploit this vulnerability to execute arbitrary code on the system. IBM X-Force ID: 182396.

Frequently asked questions

What is CVE-2020-4521?: IBM Maximo Asset Management 7.6.0 and 7.6.1 could allow a remote authenticated attacker to execute arbitrary code on the system, caused by an unsafe deserialization in Java. By sending specially-crafted request, an attacker could exploit this vulnerability to execute arbitrary code on the system. IBM X-Force ID: 182396.
How severe is CVE-2020-4521?: CVE-2020-4521 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-4521 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-4521?: CVE-2020-4521 affects Ibm Maximo Asset Management. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-4521?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-4521 published?: CVE-2020-4521 was published on 2020-09-15 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ibm:maximo_asset_management:*:*:*:*:*:*:*:*

More vulnerabilities in Ibm Maximo Asset Management

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CVE-2020-4493 — Critical (CVSS 9.8): IBM Maximo Asset Management 7.6.0 and 7.6.1 could allow an attacker to bypass authentication and issue commands using a…
CVE-2013-3323 — Critical (CVSS 9.8): A Privilege Escalation Vulnerability exists in IBM Maximo Asset Management 7.5, 7.1, and 6.2, when WebSeal with Basic…
CVE-2017-1175 — Critical (CVSS 9.8): IBM Maximo Asset Management 7.1, 7.5, and 7.6 is vulnerable to SQL injection. A remote attacker could send…
CVE-2018-1524 — High (CVSS 8.8): IBM Maximo Asset Management 7.6 through 7.6.3 installs with a default administrator account that a remote intruder…
CVE-2018-1414 — High (CVSS 8.8): IBM Maximo Asset Management 7.5 and 7.6 is vulnerable to SQL injection. A remote attacker could send specially-crafted…

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