What is CVE-2020-4230?

CVE-2020-4230 is a medium-severity vulnerability in IBM Aix. CVSS score: 6.7/10. Published 2020-02-19.

How severe is CVE-2020-4230?

Medium severity. CVSS v3 base score is 6.7 out of 10.

Vulnerability in IBM Aix

CVE-2020-4230

IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 11.1 and 11.5 is vulnerable to an escalation of privilege when an authenticated local attacker with special permissions executes specially crafted Db2 commands. IBM X-Force ID: 175212.

Published 2020-02-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 6.7 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (29.5th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 30th percentile — 29.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000

Affected products

IBM Aix
IBM Db2 — versions 11.1, 11.5
IBM Db2 For Linux- Unix And Windows — versions 11.1, 11.5
Linux Kernel
Microsoft Windows

References

www.ibm.com/support/pages/node/2878809 (Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/175212 (VDB Entry, vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2020-4230?: CVE-2020-4230 is a medium-severity vulnerability in IBM Aix. CVSS score: 6.7/10. Published 2020-02-19.
How severe is CVE-2020-4230?: Medium severity. CVSS v3 base score is 6.7 out of 10.