What is CVE-2025-2668?

CVE-2025-2668 is a medium-severity vulnerability in IBM Db2, classified under CWE-789. CVSS score: 6.5/10. Published 2026-01-30.

How severe is CVE-2025-2668?

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

Resource exhaustion in IBM Db2

CVE-2025-2668

IBM Db2 for Linux, UNIX and Windows (includes Db2 Connect Server) 11.5.0 - 11.5.9 is vulnerable to a denial of service as the server may crash when an authenticated user creates a specially crafted query.

Published 2026-01-30 · last modified 2026-06-17.

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.

EPSS exploit prediction

EPSS: 0.004 (31.0th percentile), scored 2026-09-30.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.0% 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 Db2
IBM Db2 For Linux, Unix And Windows — versions 11.5.0

Weakness classification (CWE)

References

www.ibm.com/support/pages/node/7257518 (vendor-advisory, Patch, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2025-2668?: CVE-2025-2668 is a medium-severity vulnerability in IBM Db2, classified under CWE-789. CVSS score: 6.5/10. Published 2026-01-30.
How severe is CVE-2025-2668?: Medium severity. CVSS v3 base score is 6.5 out of 10.