What is CVE-2020-4623?

CVE-2020-4623 is a medium-severity vulnerability in IBM I2 Ibase, classified under Uncontrolled Search Path Element. CVSS score: 6.5/10. Published 2021-07-26.

How severe is CVE-2020-4623?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Vulnerability in IBM I2 Ibase

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.

Published 2021-07-26 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:R/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.003 (20.5th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 21st percentile — 20.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

IBM I2 Ibase — versions 8.9.13
IBM I2 Ibase — versions 8.9.13
Microsoft Windows

Weakness classification (CWE)

CWE-427 — Uncontrolled Search Path Element

References

www.ibm.com/support/pages/node/6474857 (Patch, Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/184984 (VDB Entry, vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2020-4623?: CVE-2020-4623 is a medium-severity vulnerability in IBM I2 Ibase, classified under Uncontrolled Search Path Element. CVSS score: 6.5/10. Published 2021-07-26.
How severe is CVE-2020-4623?: Medium severity. CVSS v3 base score is 6.5 out of 10.