CVE-2026-9319: IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to potential remote code execution due to deserialization of
criticalvulnerability
security
Summary
IBM WebSphere Application Server versions 9.0 and 8.5 have a vulnerability that allows remote code execution (running malicious commands on a server from a distance) through deserialization of untrusted data (converting unverified data from a network connection back into executable code) in JAX-WS endpoints with WS-Security (web service security features).
Vulnerability Details
CVSS Score
9(critical)
EPSS (30-day exploit probability)
EPSS: 0.0%
CVSS Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H
Attack Vector
network
Attack Complexity
high
Privileges Required
none
User Interaction
none
Disclosure Date
June 1, 2026
Classification
Attack SophisticationModerate
Monthly digest — independent AI security research
Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-9319
First tracked: June 2, 2026 at 02:08 AM
Classified by LLM (prompt v3) · confidence: 95%