What is CVE-2018-1565?

CVE-2018-1565 is a high-severity vulnerability in IBM Db2, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.4/10. Published 2018-05-25.

How severe is CVE-2018-1565?

High severity. CVSS v3 base score is 8.4 out of 10.

Buffer overflow in IBM Db2

CVE-2018-1565

IBM DB2 for Linux, UNIX and Windows (includes DB2 Connect Server) 9.7, 10.1, 10.5, and 11.1 could allow a local user to overflow a buffer which may result in a privilege escalation to the DB2 instance owner. IBM X-Force ID: 143022.

Vulnerability class: Buffer Overflow

Published 2018-05-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 8.4 (High). Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.004 (31.5th percentile), scored 2026-10-20.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 31st percentile — 31.5% 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 9.7, 10.1, 10.5
IBM Db2 For Linux, Unix And Windows — versions 9.7, 10.5, 10.1
Linux Kernel
Microsoft Windows

Weakness classification (CWE)

CWE-119 — Improper Restriction of Operations within the Bounds of a Memory Buffer

References

www.ibm.com/support/docview.wss (Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/143022 (VDB Entry, vdb-entry, Vendor Advisory)
www.securitytracker.com/id/1040967 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2018-1565?: CVE-2018-1565 is a high-severity vulnerability in IBM Db2, classified under Improper Restriction of Operations within the Bounds of a Memory Buffer. CVSS score: 8.4/10. Published 2018-05-25.
How severe is CVE-2018-1565?: High severity. CVSS v3 base score is 8.4 out of 10.