What is CVE-2018-1672?

CVE-2018-1672 is a medium-severity vulnerability in IBM Websphere Portal, classified under Improper Authentication. CVSS score: 5.0/10. Published 2018-10-01.

How severe is CVE-2018-1672?

Medium severity. CVSS v3 base score is 5.0 out of 10.

Auth bypass in IBM Websphere Portal

CVE-2018-1672

IBM WebSphere Portal 7.0, 8.0, 8.5, and 9.0 may fail to set the correct user context in certain impersonation scenarios, which can allow a user to act with the identity of a different user. IBM X-Force ID: 144958.

Vulnerability class: Broken Authentication

Published 2018-10-01 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.0 (Medium). Vector: CVSS:3.0/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.012 (65.9th percentile), scored 2026-10-02.

Low probability of exploitation in the next 30 days, but still tracked. 66th percentile — 65.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.012 · newest: 0.012 · change: 0.000

Affected products

IBM Websphere Portal — versions 7.0, 8.0, 9.0
IBM Websphere Portal — versions 7.0.0.0, 7.0.0.1, 7.0.0.2

Weakness classification (CWE)

CWE-287 — Improper Authentication

References

exchange.xforce.ibmcloud.com/vulnerabilities/144958 (VDB Entry, vdb-entry, Vendor Advisory)
www.securitytracker.com/id/1041766 (VDB Entry, Third Party Advisory, vdb-entry)
www.ibm.com/support/docview.wss (Patch, Vendor Advisory)

Frequently asked questions

What is CVE-2018-1672?: CVE-2018-1672 is a medium-severity vulnerability in IBM Websphere Portal, classified under Improper Authentication. CVSS score: 5.0/10. Published 2018-10-01.
How severe is CVE-2018-1672?: Medium severity. CVSS v3 base score is 5.0 out of 10.