How severe is CVE-2020-4623?

CVE-2020-4623 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-4623 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-4623?

CVE-2020-4623 affects Ibm I2 Ibase. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2020-4623?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2020-4623 published?

CVE-2020-4623 was published on 2021-07-26 and last updated on 2026-06-17.

CVE-2020-4623

CVE-2020-4623 is a medium-severity vulnerability in Ibm I2 Ibase with a CVSS 3.x base score of 6.5. 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-427.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 4.4
EPSS exploit prediction: 0% (22nd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-427
Affected product: Ibm I2 Ibase
Published: 2021-07-26
Last modified: 2026-06-17

Description

IBM i2 iBase 8.9.13 could allow a local authenticated attacker to execute arbitrary code on the system, caused by a DLL search order hijacking flaw. By using a specially-crafted .DLL file, an attacker could exploit this vulnerability to execute arbitrary code on the system. IBM X-Force ID: 184984.

Frequently asked questions

What is CVE-2020-4623?: IBM i2 iBase 8.9.13 could allow a local authenticated attacker to execute arbitrary code on the system, caused by a DLL search order hijacking flaw. By using a specially-crafted .DLL file, an attacker could exploit this vulnerability to execute arbitrary code on the system. IBM X-Force ID: 184984.
How severe is CVE-2020-4623?: CVE-2020-4623 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over local access with low attack complexity, requires high privileges and user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-4623 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (22nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-4623?: CVE-2020-4623 affects Ibm I2 Ibase. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2020-4623?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2020-4623 published?: CVE-2020-4623 was published on 2021-07-26 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:ibm:i2_ibase:8.9.13:*:*:*:*:*:*:*

More vulnerabilities in Ibm I2 Ibase

CVE-2020-4588 — High (CVSS 7.8): IBM i2 iBase 8.9.13 could allow an attacker to upload arbitrary executable files which, when executed by an…
CVE-2020-4584 — High (CVSS 7.5): IBM i2 iBase 8.9.13 could allow a remote attacker to obtain sensitive information when a detailed technical error…
CVE-2021-29868 — Medium (CVSS 5.5): IBM i2 iBase 8.9.13 and 9.0.0 could allow a local attacker to obtain sensitive information due to insufficient session…

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Other CWE-427 (Uncontrolled Search Path Element) vulnerabilities

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CVE-2025-69599 — Critical (CVSS 9.8): RayVentory Scan Engine through 12.6 Update 8 allows attackers to gain privileges if they control the value of the PATH…
CVE-2019-25268 — Critical (CVSS 9.8): NREL BEopt 2.8.0.0 contains a DLL hijacking vulnerability that allows attackers to load arbitrary libraries by tricking…
CVE-2023-53959 — Critical (CVSS 9.8): FileZilla Client 3.63.1 contains a DLL hijacking vulnerability that allows attackers to execute malicious code by…
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