CVE-2026-9311 CRITICAL

CVE-2026-9311: IBM WebSphere Application Server is affected by remote code execution

Vendor Ibm
Product WebSphere Application Server
Weakness CWE-94 · Code injection
Published June 1, 2026
Last update June 2, 2026
View on NVD All CVEs

CVSS base score

9.0/10
Attack vector Network
Attack complexity High
Privileges required None
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H

What the vulnerability does

01Description

IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to remote code execution caused by the bypass of security controls.

Key dates

02Disclosure timeline

June 1, 2026 CVE published
June 2, 2026 Record updated