What is CVE-2020-4875?

CVE-2020-4875 is a high-severity vulnerability in IBM Cognos Controller, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 8.2/10. Published 2022-01-21.

How severe is CVE-2020-4875?

High severity. CVSS v3 base score is 8.2 out of 10.

XXE in IBM Cognos Controller

CVE-2020-4875

IBM Cognos Controller 10.4.0, 10.4.1, and 10.4.2 is vulnerable to an XML External Entity Injection (XXE) attack when processing XML data. A remote attacker could exploit this vulnerability to expose sensitive information or consume memory resources. IBM X-Force ID: 190838.

Vulnerability class: XXE (XML External Entity)

Published 2022-01-21 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L.

EPSS exploit prediction

EPSS: 0.017 (77.2th percentile), scored 2026-10-20.

Low probability of exploitation in the next 30 days, but still tracked. 77th percentile — 77.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.017 · newest: 0.017 · change: 0.000

Affected products

IBM Cognos Controller — versions 10.4.0, 10.4.1, 10.4.2
IBM Cognos Controller — versions 10.4.0, 10.4.1, 10.4.2
Microsoft Windows

Weakness classification (CWE)

CWE-611 — Improper Restriction of XML External Entity Reference (XXE)

References

www.ibm.com/support/pages/node/6509856 (Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/190838 (VDB Entry, vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2020-4875?: CVE-2020-4875 is a high-severity vulnerability in IBM Cognos Controller, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 8.2/10. Published 2022-01-21.
How severe is CVE-2020-4875?: High severity. CVSS v3 base score is 8.2 out of 10.