What is CVE-2026-14974?

CVE-2026-14974 is a high-severity vulnerability in IBM Websphere Application Server, classified under Deserialization of Untrusted Data. CVSS score: 8.1/10. Published 2026-07-28.

How severe is CVE-2026-14974?

High severity. CVSS v3 base score is 8.1 out of 10.

Deserialization in IBM Websphere Application Server

CVE-2026-14974

IBM WebSphere Application Server 8.5, and 9.0 traditional could allow a remote attacker to execute arbitrary code caused by unsafe deserialization of untrusted data.

Vulnerability class: Insecure Deserialization

EPSS: 0.004 (31.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.1 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Ibm Websphere Application Server — versions 8.5, 9.0
Ibm Websphere_application_server

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

psirt@us.ibm.com (vendor-advisory, patch, Vendor Advisory)

Frequently asked questions

What is CVE-2026-14974?: CVE-2026-14974 is a high-severity vulnerability in IBM Websphere Application Server, classified under Deserialization of Untrusted Data. CVSS score: 8.1/10. Published 2026-07-28.
How severe is CVE-2026-14974?: High severity. CVSS v3 base score is 8.1 out of 10.