What is CVE-2020-4945?

CVE-2020-4945 is a high-severity vulnerability in IBM Aix, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 8.1/10. Published 2021-06-24.

How severe is CVE-2020-4945?

High severity. CVSS v3 base score is 8.1 out of 10.

Vulnerability in IBM Aix

CVE-2020-4945

IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) 11.5 could allow an authenticated user to overwrite arbirary files due to improper group permissions. IBM X-Force ID: 191945.

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

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H.

EPSS exploit prediction

EPSS: 0.010 (62.7th percentile), scored 2026-10-01.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 62.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · 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-732 — Incorrect Permission Assignment for Critical Resource

References

www.ibm.com/support/pages/node/6466367 (Patch, Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/191945 (VDB Entry, vdb-entry, Vendor Advisory)
security.netapp.com/advisory/ntap-20210720-0006/ (Third Party Advisory)

Frequently asked questions

What is CVE-2020-4945?: CVE-2020-4945 is a high-severity vulnerability in IBM Aix, classified under Incorrect Permission Assignment for Critical Resource. CVSS score: 8.1/10. Published 2021-06-24.
How severe is CVE-2020-4945?: High severity. CVSS v3 base score is 8.1 out of 10.