What is CVE-2023-45178?

CVE-2023-45178 is a medium-severity vulnerability in IBM Db2, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2023-12-03.

How severe is CVE-2023-45178?

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

Improper input validation in IBM Db2

CVE-2023-45178

IBM Db2 for Linux, UNIX and Windows (includes DB2 Connect Server) 11.5 CLI is vulnerable to a denial of service when a specially crafted request is used. IBM X-Force ID: 268073.

Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)

Published 2023-12-03 · 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: 0.011 (64.2th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 64.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.011 · newest: 0.011 · change: 0.000

Affected products

IBM Db2 — versions 11.5
IBM Db2 For Linux, Unix And Windows — versions 11.5

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

www.ibm.com/support/pages/node/7087207 (vendor-advisory, Patch, Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/268073 (VDB Entry, vdb-entry, Vendor Advisory)
security.netapp.com/advisory/ntap-20240112-0004/

Frequently asked questions

What is CVE-2023-45178?: CVE-2023-45178 is a medium-severity vulnerability in IBM Db2, classified under Improper Input Validation. CVSS score: 6.5/10. Published 2023-12-03.
How severe is CVE-2023-45178?: Medium severity. CVSS v3 base score is 6.5 out of 10.