Is CVE-2020-4521 in the CISA KEV catalog?

No. CVE-2020-4521 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-4521?

CVE-2020-4521 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2020-4521?

CVE-2020-4521 has an EPSS score of 6.46% (93th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-4521?

Upgrade maximo asset management to 7.6.1.2 or later.

CVE & CISA-KEV Catalog

CVE-2020-4521

HIGHEPSS 93th pctl

8.8

CVSS v3

NVD

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.

CWE-502Deserialization of Untrusted Data

How to fix

Remediation Available

maximo asset managementNVD

Affected:>= 7.6.1, < 7.6.1.2Fixed in:7.6.1.2CVE-2020-4521derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Exploit Intelligence

6.46%probability of exploitation in 30 days

93rdpercentile

High risk: more likely to be exploited than 93% of all known CVEs.

References

Patch1

ibm.com

Vendor Advisory1

exchange.xforce.ibmcloud.com

Related Vulnerabilities

Other CWE-502 (Deserialization of Untrusted Data) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2023-0669	High	7.2	100%	KEV + Ransom	Fix
CVE-2021-44228	Critical	10.0	100%	KEV + Ransom	Fix
CVE-2021-35464	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2023-29300	Critical	9.8	100%	KEV + Ransom	-
CVE-2025-53770	Critical	9.8	100%	KEV + Ransom	Fix
CVE-2022-47986	Critical	9.8	100%	KEV + Ransom	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2024-11-21.