What is CVE-2023-42031?

CVE-2023-42031 is a medium-severity vulnerability in IBM Aix, classified under Uncontrolled Resource Consumption. CVSS score: 4.9/10. Published 2023-10-25.

How severe is CVE-2023-42031?

Medium severity. CVSS v3 base score is 4.9 out of 10.

Resource exhaustion in IBM Aix

CVE-2023-42031

IBM TXSeries for Multiplatforms, 8.1, 8.2, and 9.1, CICS TX Standard CICS TX Advanced 10.1 and 11.1 could allow a privileged user to cause a denial of service due to uncontrolled resource consumption. IBM X-Force ID: 266016.

Vulnerability class: DoS (Denial of Service)

Published 2023-10-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.9 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:H.

EPSS exploit prediction

EPSS: 0.010 (63.0th percentile), scored 2026-10-20.

Low probability of exploitation in the next 30 days, but still tracked. 63rd percentile — 63.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.010 · newest: 0.010 · change: 0.000

Affected products

IBM Aix
IBM Cics Tx — versions 10.1, 11.1
IBM Cics Tx Advanced — versions 10.1, 11.1
IBM Cics Tx Standard — versions 11.1
IBM Txseries For Multiplatforms — versions 8.1, 8.2, 9.1
IBM Txseries For Multiplatforms — versions 8.1, 8.2, 9.1
Linux Kernel

Weakness classification (CWE)

CWE-400 — Uncontrolled Resource Consumption

References

www.ibm.com/support/pages/node/7056433 (vendor-advisory, Vendor Advisory)
www.ibm.com/support/pages/node/7056429 (vendor-advisory, Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/266061 (VDB Entry, vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2023-42031?: CVE-2023-42031 is a medium-severity vulnerability in IBM Aix, classified under Uncontrolled Resource Consumption. CVSS score: 4.9/10. Published 2023-10-25.
How severe is CVE-2023-42031?: Medium severity. CVSS v3 base score is 4.9 out of 10.