CVE-2026-12148 HIGH

CVE-2026-12148: IBM MQ Deserialization of Untrusted Data

Vendor Ibm
Product MQ Operator
Weakness CWE-502 · Unsafe deserialization
Published October 19, 2026
Last update October 20, 2026
View on NVD All CVEs

CVSS base score

7.5/10
Attack vector Network
Attack complexity High
Privileges required Low
User interaction None
Confidentiality High
Integrity High

CVSS vector

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

What the vulnerability does

01Description

IBM MQ Operator could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to unrestricted Java deserialization in the MQ Classes for Java.

Key dates

02Disclosure timeline

October 19, 2026 CVE published
October 20, 2026 Record updated