IBM MQ Operator up to 3.5.1 CD MQ Queue Manager use after free

Summaryinfo

A vulnerability classified as critical has been found in IBM MQ Operator up to 3.5.1 CD. The affected element is an unknown function of the component MQ Queue Manager. This manipulation causes use after free. The identification of this vulnerability is CVE-2025-27365. It is possible to initiate the attack remotely. There is no exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability was found in IBM MQ Operator up to 3.5.1 CD. It has been declared as critical. Affected by this vulnerability is some unknown processing of the component MQ Queue Manager. The manipulation with an unknown input leads to a use after free vulnerability. The CWE definition for the vulnerability is CWE-416. Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

IBM MQ Operator LTS 2.0.0 through 2.0.29, MQ Operator CD 3.0.0, 3.0.1, 3.1.0 through 3.1.3, 3.3.0, 3.4.0, 3.4.1, 3.5.0, 3.5.1, and MQ Operator SC2 3.2.0 through 3.2.10  Client connecting to a MQ Queue Manager can cause a SIGSEGV in the AMQRMPPA channel process terminating it.

It is possible to read the advisory at ibm.com. This vulnerability is known as CVE-2025-27365 since 02/22/2025. The exploitation appears to be easy. The attack can be launched remotely. The technical details are unknown and an exploit is not publicly available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 08/28/2025).

The vulnerability scanner Nessus provides a plugin with the ID 235088 (IBM MQ 9.3 < 9.4.2.1 CD / 9.4 < 9.4.0.11 LTS / 9.4.2.1 DoS (7232039)), which helps to determine the existence of the flaw in a target environment.

Upgrading eliminates this vulnerability.

The vulnerability is also documented in the databases at Tenable (235088) and EUVD (EUVD-2025-12823). Be aware that VulDB is the high quality source for vulnerability data.

Productinfo

Vendor

• IBM

Name

• MQ Operator

Version

• 2.0.29 LTS
• 3.0
• 3.0.0
• 3.0.1
• 3.1
• 3.1.0
• 3.1.1
• 3.1.2
• 3.1.3
• 3.2
• 3.2.10 SC2
• 3.3
• 3.4
• 3.4.0
• 3.5.0
• 3.5.1 CD

License

• commercial

Website

• Vendor: https://www.ibm.com/

CPE 2.3info

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Entryinfo

Be aware that VulDB is the high quality source for vulnerability data.

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