What is CVE-2026-113698?

CVE-2026-113698 is a medium-severity vulnerability in IBM Db2, classified under Stack-based Buffer Overflow. CVSS score: 6.5/10. Published 2026-11-08.

How severe is CVE-2026-113698?

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

Buffer overflow in IBM Db2

CVE-2026-113698

IBM Db2 11.5.0 through 11.5.9, and 12.1.0 through 12.1.5 is vulnerable to a denial of service when executing a specially crafted query with a Materialized Query Table.

Vulnerability class: Buffer Overflow

Published 2026-11-08 · last modified 2026-11-08.

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

No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.

Affected products

IBM Db2

Weakness classification (CWE)

CWE-121 — Stack-based Buffer Overflow

References

www.ibm.com/support/pages/node/7291614 (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-113698?: CVE-2026-113698 is a medium-severity vulnerability in IBM Db2, classified under Stack-based Buffer Overflow. CVSS score: 6.5/10. Published 2026-11-08.
How severe is CVE-2026-113698?: Medium severity. CVSS v3 base score is 6.5 out of 10.