IBM MQ up to 10.0.0.5 deserialization

Summaryinfo

A vulnerability was found in IBM MQ up to 9.2.0.44/9.3.0.42/9.4.0.26/9.4.5.1/10.0.0.5 and classified as very critical. Affected by this issue is some unknown functionality. The manipulation results in deserialization. This vulnerability is known as CVE-2026-10859. It is possible to launch the attack remotely. No exploit is available.

Detailsinfo

A vulnerability classified as very critical has been found in IBM MQ up to 9.2.0.44/9.3.0.42/9.4.0.26/9.4.5.1/10.0.0.5. Affected is an unknown code. The manipulation with an unknown input leads to a deserialization vulnerability. CWE is classifying the issue as CWE-502. The product deserializes untrusted data without sufficiently verifying that the resulting data will be valid. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at ibm.com. This vulnerability is traded as CVE-2026-10859 since 06/04/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The technical details are unknown and an exploit is not available. The structure of the vulnerability defines a possible price range of USD $5k-$25k at the moment (estimation calculated on 11/04/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

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Productinfo

Vendor

• IBM

Name

• MQ

Version

• 9.2.0.0
• 9.2.0.1
• 9.2.0.2
• 9.2.0.3
• 9.2.0.4
• 9.2.0.5
• 9.2.0.6
• 9.2.0.7
• 9.2.0.8
• 9.2.0.9
• 9.2.0.10
• 9.2.0.11
• 9.2.0.12
• 9.2.0.13
• 9.2.0.14
• 9.2.0.15
• 9.2.0.16
• 9.2.0.17
• 9.2.0.18
• 9.2.0.19
• 9.2.0.20
• 9.2.0.21
• 9.2.0.22
• 9.2.0.23
• 9.2.0.24
• 9.2.0.25
• 9.2.0.26
• 9.2.0.27
• 9.2.0.28
• 9.2.0.29
• 9.2.0.30
• 9.2.0.31
• 9.2.0.32
• 9.2.0.33
• 9.2.0.34
• 9.2.0.35
• 9.2.0.36
• 9.2.0.37
• 9.2.0.38
• 9.2.0.39
• 9.2.0.40
• 9.2.0.41
• 9.2.0.42
• 9.2.0.43
• 9.2.0.44
• 9.3.0.0
• 9.3.0.1
• 9.3.0.2
• 9.3.0.3
• 9.3.0.4
• 9.3.0.5
• 9.3.0.6
• 9.3.0.7
• 9.3.0.8
• 9.3.0.9
• 9.3.0.10
• 9.3.0.11
• 9.3.0.12
• 9.3.0.13
• 9.3.0.14
• 9.3.0.15
• 9.3.0.16
• 9.3.0.17
• 9.3.0.18
• 9.3.0.19
• 9.3.0.20
• 9.3.0.21
• 9.3.0.22
• 9.3.0.23
• 9.3.0.24
• 9.3.0.25
• 9.3.0.26
• 9.3.0.27
• 9.3.0.28
• 9.3.0.29
• 9.3.0.30
• 9.3.0.31
• 9.3.0.32
• 9.3.0.33
• 9.3.0.34
• 9.3.0.35
• 9.3.0.36
• 9.3.0.37
• 9.3.0.38
• 9.3.0.39
• 9.3.0.40
• 9.3.0.41
• 9.3.0.42
• 9.4.0.0
• 9.4.0.1
• 9.4.0.2
• 9.4.0.3
• 9.4.0.4
• 9.4.0.5
• 9.4.0.6
• 9.4.0.7
• 9.4.0.8
• 9.4.0.9
• 9.4.0.10
• 9.4.0.11
• 9.4.0.12
• 9.4.0.13
• 9.4.0.14
• 9.4.0.15
• 9.4.0.16
• 9.4.0.17
• 9.4.0.18
• 9.4.0.19
• 9.4.0.20
• 9.4.0.21
• 9.4.0.22
• 9.4.0.23
• 9.4.0.24
• 9.4.0.25
• 9.4.0.26
• 9.4.5.0
• 9.4.5.1
• 10.0.0.0
• 10.0.0.1
• 10.0.0.2
• 10.0.0.3
• 10.0.0.4
• 10.0.0.5

License

• commercial

Website

• Vendor: https://www.ibm.com/

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