What is CVE-2026-1718?

CVE-2026-1718 is a high-severity vulnerability in IBM Db2, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.1/10. Published 2026-05-27.

How severe is CVE-2026-1718?

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

Resource exhaustion in IBM Db2

CVE-2026-1718

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.4 is vulnerable to a denial of service with a specially crafted query when autonomous transactions are enabled.

Published 2026-05-27 · 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:L/I:N/A:H.

EPSS exploit prediction

EPSS: 0.004 (28.4th percentile), scored 2026-10-19.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 28th percentile — 28.4% 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 — versions 11.5.0, 12.1.0
IBM Linux On Z
Linux Kernel

Weakness classification (CWE)

CWE-770 — Allocation of Resources Without Limits or Throttling

References

www.ibm.com/support/pages/node/7273555 (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-1718?: CVE-2026-1718 is a high-severity vulnerability in IBM Db2, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.1/10. Published 2026-05-27.
How severe is CVE-2026-1718?: High severity. CVSS v3 base score is 7.1 out of 10.