Heap Buffer Overflow in IBM MQ Affects User Operations
CVE-2026-10575

8.8HIGH

Key Information:

Vendor

IBM
Status
MQ
Vendor
CVE Published:
18 September 2026

What is CVE-2026-10575?

A potential vulnerability exists in IBM MQ that could enable an authenticated attacker to trigger a denial of service or escalate their privileges. This is due to a heap buffer overflow occurring when malformed distribution headers are processed during MQPUT operations. Users are advised to apply the latest patches to mitigate this risk and protect their systems from exploitation.

Affected Version(s)

MQ 9.1.0.0 <= 9.1.0.37 LTS

MQ 9.2.0.0 <= 9.2.0.43 LTS

MQ 9.3.0.0 <= 9.3.0.41 LTS

References

https://www.ibm.com/support/pages/node/7287778
vendor-advisorypatch

CVSS V3.1

Score:
8.8
Severity:
HIGH
Confidentiality:
High
Integrity:
High
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

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