What is CVE-2025-33121?

CVE-2025-33121 is a high-severity vulnerability in IBM Qradar Security Information And Event Manager, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.1/10. Published 2025-06-19.

How severe is CVE-2025-33121?

High severity. CVSS v3 base score is 7.1 out of 10.

XXE in IBM Qradar Security Information And Event Manager

CVE-2025-33121

IBM QRadar SIEM 7.5 through 7.5.0 Update Package 12 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.

Vulnerability class: XXE (XML External Entity)

Published 2025-06-19 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.1 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L.

EPSS exploit prediction

EPSS: 0.005 (39.3th percentile), scored 2026-10-03.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.3% 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: 0.005 · change: +0.001

Affected products

IBM Qradar Security Information And Event Manager — versions 7.5.0
IBM Qradar Siem — versions 7.5
Linux Kernel

Weakness classification (CWE)

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

References

www.ibm.com/support/pages/node/7237317 (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2025-33121?: CVE-2025-33121 is a high-severity vulnerability in IBM Qradar Security Information And Event Manager, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.1/10. Published 2025-06-19.
How severe is CVE-2025-33121?: High severity. CVSS v3 base score is 7.1 out of 10.