What is CVE-2019-4439?

CVE-2019-4439 is a medium-severity vulnerability in IBM Cloud Private, classified under Session Fixation. CVSS score: 5.3/10. Published 2019-07-25.

How severe is CVE-2019-4439?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Vulnerability in IBM Cloud Private

CVE-2019-4439

IBM Cloud Private 3.1.0, 3.1.1, and 3.1.2 does not invalidate session after logout which could allow a local user to impersonate another user on the system. IBM X-Force ID: 162949.

Published 2019-07-25 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L.

EPSS exploit prediction

EPSS: 0.003 (19.1th percentile), scored 2026-10-01.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 19th percentile — 19.1% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000

Affected products

IBM Cloud Private — versions 3.1.0, 3.1.1, 3.1.2
IBM Cloud Private — versions 3.1.0, 3.1.1, 3.1.2

Weakness classification (CWE)

CWE-384 — Session Fixation

References

www.ibm.com/support/docview.wss (Patch, Vendor Advisory)
exchange.xforce.ibmcloud.com/vulnerabilities/162949 (VDB Entry, vdb-entry, Vendor Advisory)

Frequently asked questions

What is CVE-2019-4439?: CVE-2019-4439 is a medium-severity vulnerability in IBM Cloud Private, classified under Session Fixation. CVSS score: 5.3/10. Published 2019-07-25.
How severe is CVE-2019-4439?: Medium severity. CVSS v3 base score is 5.3 out of 10.