How severe is CVE-2020-4638?

CVE-2020-4638 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-4638 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-4638?

CVE-2020-4638 affects Ibm Api Connect. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-4638?

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-2020-4638 published?

CVE-2020-4638 was published on 2020-09-03 and last updated on 2026-06-17.

CVE-2020-4638

CVE-2020-4638 is a high-severity vulnerability in Ibm Api Connect with a CVSS 3.x base score of 7.2. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.2)
CVSS v2: 6.5
EPSS exploit prediction: 2% (75th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Ibm Api Connect
Published: 2020-09-03
Last modified: 2026-06-17

Description

IBM API Connect's API Manager 2018.4.1.0 through 2018.4.1.12 is vulnerable to privilege escalation. An invitee to an API Provider organization can escalate privileges by manipulating the invitation link. IBM X-Force ID: 185508.

Frequently asked questions

What is CVE-2020-4638?: IBM API Connect's API Manager 2018.4.1.0 through 2018.4.1.12 is vulnerable to privilege escalation. An invitee to an API Provider organization can escalate privileges by manipulating the invitation link. IBM X-Force ID: 185508.
How severe is CVE-2020-4638?: CVE-2020-4638 has a CVSS 3.x base score of 7.2, rated high severity. It is exploitable over network with low attack complexity, requires high privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-4638 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (75th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-4638?: CVE-2020-4638 affects Ibm Api Connect. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-4638?: 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-2020-4638 published?: CVE-2020-4638 was published on 2020-09-03 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ibm:api_connect:*:*:*:*:*:*:*:*

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