CVE-2020-4623

Name: CVE-2020-4623
Creator: NVD / NIST
Published: 2021-07-26T12:15:08.317+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.5/10EPSS 0.30%

Last modified Jun 17, 2026

CVE-2020-4623 is a medium-severity vulnerability rated 6.5/10 on the CVSS scale. 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. EPSS estimates a 0.30% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

6.5/10

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

EPSS Probability

0.30%

21.6th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-427

Affected Software

Vendor	Product	Versions
Ibm	I2 Ibase	8.9.13

References

https://exchange.xforce.ibmcloud.com/vulnerabilities/184984VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6474857Patch, Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/184984VDB Entry, Vendor Advisory
https://www.ibm.com/support/pages/node/6474857Patch, Vendor Advisory

Timeline

Published: Jul 26, 2021
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-4623?

How severe is CVE-2020-4623?

CVE-2020-4623 has a CVSS score of 6.5/10 (MEDIUM severity). The EPSS model estimates a 0.30% probability of exploitation in the next 30 days.

How do I fix CVE-2020-4623?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-4623?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST