How severe is CVE-2020-4747?

CVE-2020-4747 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-2020-4747 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-4747?

CVE-2020-4747 primarily affects Ibm Connect. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-4747?

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-2020-4747 published?

CVE-2020-4747 was published on 2020-12-15 and last updated on 2026-06-17.

CVE-2020-4747

CVE-2020-4747 is a critical-severity vulnerability in Ibm Connect 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-287.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 2% (79th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-287
Affected product: Ibm Connect
Published: 2020-12-15
Last modified: 2026-06-17

Description

IBM Connect:Direct for UNIX 6.1.0, 6.0.0, 4.3.0, and 4.2.0 can allow a local or remote user to obtain an authenticated CLI session due to improper authentication methods. IBM X-Force ID: 188516.

Frequently asked questions

What is CVE-2020-4747?: IBM Connect:Direct for UNIX 6.1.0, 6.0.0, 4.3.0, and 4.2.0 can allow a local or remote user to obtain an authenticated CLI session due to improper authentication methods. IBM X-Force ID: 188516.
How severe is CVE-2020-4747?: CVE-2020-4747 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-2020-4747 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (79th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-4747?: CVE-2020-4747 primarily affects Ibm Connect. In total, 4 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-4747?: 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-2020-4747 published?: CVE-2020-4747 was published on 2020-12-15 and last updated on 2026-06-17.

References

Affected products (4)

cpe:2.3:a:ibm:connect\:direct:4.2.0:*:*:*:*:unix:*:*
cpe:2.3:a:ibm:connect\:direct:4.3.0:*:*:*:*:unix:*:*
cpe:2.3:a:ibm:connect\:direct:6.0.0:*:*:*:*:unix:*:*
cpe:2.3:a:ibm:connect\:direct:6.1.0:*:*:*:*:unix:*:*

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