What is CVE-2026-14512?

CVE-2026-14512 is a critical-severity vulnerability in Ibm Websphere Application Server, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-07-28.

How severe is CVE-2026-14512?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Deserialization in Ibm Websphere Application Server

CVE-2026-14512

IBM WebSphere Application Server 9.0, and 8.5 traditional is vulnerable to pre-authentication unsafe deserialization which could allow a remote attacker to bypass authentication or execute arbitrary code.

Vulnerability class: Insecure Deserialization

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Ibm Websphere Application Server — versions 9.0, 8.5

Weakness classification (CWE)

CWE-502 — Deserialization of Untrusted Data

References

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

Frequently asked questions

What is CVE-2026-14512?: CVE-2026-14512 is a critical-severity vulnerability in Ibm Websphere Application Server, classified under Deserialization of Untrusted Data. CVSS score: 9.8/10. Published 2026-07-28.
How severe is CVE-2026-14512?: Critical severity. CVSS v3 base score is 9.8 out of 10.