What is CVE-2025-36247?

CVE-2025-36247 is a high-severity vulnerability in IBM Db2, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.1/10. Published 2026-02-17.

How severe is CVE-2025-36247?

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

XXE in IBM Db2

CVE-2025-36247

IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) 11.5.0 through 11.5.9 and 12.1.0 through 12.1.3 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)

EPSS: 0.003 (21.8th percentile) — read the EPSS interpretation.

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.

Affected products

Ibm Db2
Ibm Db2 For Linux, Unix And Windows — versions 11.5.0, 12.1.0

Weakness classification (CWE)

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

References

psirt@us.ibm.com (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2025-36247?: CVE-2025-36247 is a high-severity vulnerability in IBM Db2, classified under Improper Restriction of XML External Entity Reference (XXE). CVSS score: 7.1/10. Published 2026-02-17.
How severe is CVE-2025-36247?: High severity. CVSS v3 base score is 7.1 out of 10.