What is CVE-2020-4864?

CVE-2020-4864 is a medium-severity vulnerability in IBM Resilient Onprem, classified under Authentication Bypass by Spoofing. CVSS score: 4.3/10. Published 2020-10-29.

How severe is CVE-2020-4864?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in IBM Resilient Onprem

CVE-2020-4864

IBM Resilient SOAR V38.0 could allow an attacker on the internal net work to provide the server with a spoofed source IP address. IBM X-Force ID: 190567.

Published 2020-10-29 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N.

EPSS exploit prediction

EPSS: 0.004 (36.3th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 36th percentile — 36.3% 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 Resilient Onprem — versions 38
IBM Resilient Security Orchestration Automation And Response — versions 38.0

Weakness classification (CWE)

CWE-290 — Authentication Bypass by Spoofing

References

www.ibm.com/support/pages/node/6356441 (Patch, Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/190567 (VDB Entry, vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2020-4864?: CVE-2020-4864 is a medium-severity vulnerability in IBM Resilient Onprem, classified under Authentication Bypass by Spoofing. CVSS score: 4.3/10. Published 2020-10-29.
How severe is CVE-2020-4864?: Medium severity. CVSS v3 base score is 4.3 out of 10.