What is CVE-2020-4885?

CVE-2020-4885 is a medium-severity vulnerability in IBM Aix, classified under Improper Link Resolution Before File Access. CVSS score: 4.7/10. Published 2021-06-24.

How severe is CVE-2020-4885?

Medium severity. CVSS v3 base score is 4.7 out of 10.

Vulnerability in IBM Aix

CVE-2020-4885

IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) 11.5 could allow a local user to access and change the configuration of Db2 due to a race condition of a symbolic link,. IBM X-Force ID: 190909.

Published 2021-06-24 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.7 (Medium). Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:N/I:H/A:N.

EPSS exploit prediction

EPSS: 0.003 (19.4th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.4% 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 Aix
IBM Db2 — versions 11.5
IBM Db2 For Linux And Unix — versions 11.5
Linux Kernel

Weakness classification (CWE)

CWE-59 — Improper Link Resolution Before File Access

References

www.ibm.com/support/pages/node/6466363 (Patch, Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/190909 (VDB Entry, vdb-entry, Vendor Advisory)
security.netapp.com/advisory/ntap-20210720-0006/ (Third Party Advisory)

Frequently asked questions

What is CVE-2020-4885?: CVE-2020-4885 is a medium-severity vulnerability in IBM Aix, classified under Improper Link Resolution Before File Access. CVSS score: 4.7/10. Published 2021-06-24.
How severe is CVE-2020-4885?: Medium severity. CVSS v3 base score is 4.7 out of 10.