What is CVE-2023-40699?

CVE-2023-40699 is a high-severity vulnerability in IBM Aix, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2023-12-01.

How severe is CVE-2023-40699?

High severity. CVSS v3 base score is 7.5 out of 10.

Improper input validation in IBM Aix

CVE-2023-40699

IBM InfoSphere Information Server 11.7 could allow a remote attacker to cause a denial of service due to improper input validation. IBM X-Force ID: 265161.

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

Published 2023-12-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.011 (63.8th percentile), scored 2026-10-03.

Low probability of exploitation in the next 30 days, but still tracked. 64th percentile — 63.8% 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 Aix
IBM Infosphere Information Server — versions 11.7
IBM Infosphere Information Server
Linux Kernel
Microsoft Windows

Weakness classification (CWE)

CWE-20 — Improper Input Validation

References

www.ibm.com/support/pages/node/7067714 (vendor-advisory, Patch, Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/265161 (VDB Entry, vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2023-40699?: CVE-2023-40699 is a high-severity vulnerability in IBM Aix, classified under Improper Input Validation. CVSS score: 7.5/10. Published 2023-12-01.
How severe is CVE-2023-40699?: High severity. CVSS v3 base score is 7.5 out of 10.