Is CVE-2021-20423 in the CISA KEV catalog?

No. CVE-2021-20423 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2021-20423?

CVE-2021-20423 has a CVSS v3 base score of 8.8 (HIGH).

What is the EPSS score for CVE-2021-20423?

CVE-2021-20423 has an EPSS score of 1.06% (61th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2021-20423?

Upgrade cloud pak for applications to 4.3.1 or later.

CVE & CISA-KEV Catalog

CVE-2021-20423

HIGH

8.8

CVSS v3

NVD

Description

IBM Cloud Pak for Applications 4.3 could allow an authenticated user gain escalated privilesges due to improper application permissions. IBM X-Force ID: 196308.

CWE-732Incorrect Permission Assignment for Critical Resource

How to fix

Remediation Available

cloud pak for applicationsNVD

Affected:< 4.3.1Fixed in:4.3.1CVE-2021-20423derived 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

1.06%probability of exploitation in 30 days

61stpercentile

Moderate risk: more likely to be exploited than 61% of all known CVEs.

References

Vendor Advisory1

ibm.com

VDB Entry1

exchange.xforce.ibmcloud.com

Related Vulnerabilities

Other CWE-732 (Incorrect Permission Assignment for Critical Resource) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2011-3923	Critical	9.8	89%	-	Fix
CVE-2018-15379	Critical	9.8	86%	-	-
CVE-2018-1000207	High	7.2	64%	-	-
CVE-2023-32986	High	8.8	63%	-	-
CVE-2021-44521	Critical	9.1	55%	-	Fix
CVE-2018-13374	Medium	4.3	38%	KEV + Ransom	Fix

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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.