CVE-2026-10859
IBM MQ XMS .NET client is affected by an arbitrary code execution vulnerability
CVSS Score
7.5
EPSS Score
0.0%
EPSS Percentile
0th
IBM MQ 9.2.0.0 through 9.2.0.44 LTS, 9.3.0.0 through 9.3.0.42 LTS, 9.4.0.0 through 9.4.0.26 LTS, 9.4.0.0 through 9.4.5.1 CD, and 10.0.0.0 through 10.0.0.5 LTS and CD could allow an authenticated attacker to execute arbitrary code on consumer applications due to insecure deserialization of ObjectMessage payloads.
| Vendor | ibm |
| Product | mq |
| Published | Nov 4, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H Attack Vector
Network
Attack Complexity
High
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Affected Versions
IBM / MQ
9.2.0.0 ≤ 9.2.0.44 9.3.0.0 ≤ 9.3.0.42 9.4.0.0 ≤ 9.4.0.26 9.4.0.0 ≤ 9.4.5.1 10.0.0.0 ≤ 10.0.0.5