CVE-2026-9311 — CRITICAL (9.0)

Q: What is CVE-2026-9311?

CVE-2026-9311 is a vulnerability with a CVSS score of 9.0 (CRITICAL). IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to remote code execution caused by the bypass of security controls.

Q: How severe is CVE-2026-9311?

CVE-2026-9311 has been rated CRITICAL with a CVSS base score of 9.0/10. This is considered a critical vulnerability requiring immediate attention.

Q: Is there a patch for CVE-2026-9311?

Check the references section above for vendor advisories and patch information. Affected products include: Ibm Websphere Application Server.

Vulnerability Description

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

CVSS Score

9.0

CRITICAL

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

Scope

CHANGED

Confidentiality

HIGH

Integrity

HIGH

Availability

HIGH

Affected Products

Vendor	Product	Versions
Ibm	Websphere Application Server	>= 8.5.0.0, < 8.5.5.30

Related Weaknesses (CWE)

CWE-94

References

https://www.ibm.com/support/pages/node/7274733Vendor Advisory

FAQ

What is CVE-2026-9311?

CVE-2026-9311 is a vulnerability with a CVSS score of 9.0 (CRITICAL). IBM WebSphere Application Server 9.0, and 8.5 is vulnerable to remote code execution caused by the bypass of security controls.

How severe is CVE-2026-9311?

CVE-2026-9311 has been rated CRITICAL with a CVSS base score of 9.0/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-9311?

Check the references section above for vendor advisories and patch information. Affected products include: Ibm Websphere Application Server.