PT-2026-45544 · Ibm · Ibm Websphere Application Server

CVE-2026-9319 · Published 2026-06-01 · Updated 2026-06-23

Positive Technologies (AI Summary)

CVSS v3.1

9.0

Critical

Base vector

AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

Name of the Vulnerable Software and Affected Versions IBM WebSphere Application Server version 8.5 IBM WebSphere Application Server version 9.0

Description Remote code execution can occur due to the deserialization of untrusted data. This issue affects JAX-WS endpoints that utilize WS-Security.

Recommendations Update IBM WebSphere Application Server version 8.5 to a patched version. Update IBM WebSphere Application Server version 9.0 to a patched version.

Fix

RCE

Deserialization of Untrusted Data

Weakness Enumeration

CWE-502

Related Identifiers

CVE-2026-9319

Affected Products

Ibm Websphere Application Server

References · 8

• https://nvd.nist.gov/vuln/detail/CVE-2026-9319 · Security Note
• https://twitter.com/NCIIPC/status/2063940221524402304 · Twitter Post
• https://twitter.com/integ_sec/status/2069445319415173148 · Twitter Post
• https://twitter.com/NewsNerdie/status/2062595854200975574 · Twitter Post
• https://ibm.com/support/pages/node/7274738 · Patch, Vendor Advisory
• https://twitter.com/OrizonCyber/status/2061606231697985936 · Twitter Post
• https://twitter.com/knaepp/status/2069042248797376727 · Twitter Post
• https://twitter.com/CCBalert/status/2061805487553740918 · Twitter Post