What is CVE-2025-36387?

CVE-2025-36387 is a medium-severity vulnerability in IBM Db2, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2026-01-30.

How severe is CVE-2025-36387?

Medium severity. CVSS v3 base score is 6.5 out of 10.

Resource exhaustion in IBM Db2

CVE-2025-36387

IBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) 11.5.0 - 11.5.9 could allow an authenticated user to cause a denial of service when given specially crafted query.

EPSS: 0.003 (25.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H.

Affected products

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

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

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

Frequently asked questions

What is CVE-2025-36387?: CVE-2025-36387 is a medium-severity vulnerability in IBM Db2, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 6.5/10. Published 2026-01-30.
How severe is CVE-2025-36387?: Medium severity. CVSS v3 base score is 6.5 out of 10.