CVE-2026-12665

IBM MQ Buffer Overflow

IBM MQ could allow a remote attacker to execute arbitrary code due to a stack buffer overflow when processing TLS certificates with malformed distinguished names during channel connection establishment.

CVSS 3.1 · 8.1 High EPSS < 1% KEV · Not listed

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Ibm

Products

Mq Advanced Container Images Mq Operator Supplied Mq Advanced Container Images

CVE-2026-10574

IBM MQ Buffer Overflow

IBM MQ could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to a heap buffer overflow when processing MQPUT or MQPUT1 operations with malformed message handle properties.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

Vendors

Ibm

Products

Mq Advanced Container Images Mq Operator Supplied Mq Advanced Container Images

CVE-2026-12155

IBM MQ Deserialization of Untrusted Data

IBM MQ could allow an authenticated attacker to cause a denial of service by sending specially crafted multicast status messages that trigger a NULL pointer dereference.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Ibm

Products

Mq Advanced Container Images Mq Operator Supplied Mq Advanced Container Images

CVE-2026-12148

IBM MQ Deserialization of Untrusted Data

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.

CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed

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Ibm

Products

Mq Advanced Container Images Mq Operator Supplied Mq Advanced Container Images

CVE-2026-11831

IBM MQ Heap-based Buffer Overflow

IBM MQ could allow an authenticated attacker to cause a limited denial of service and obtain very limited information about process memory layout due to an out-of-bounds read when processing a specially crafted client request.

CVSS 3.1 · 5.4 Medium EPSS < 1% KEV · Not listed

Vendors

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Products

Mq Advanced Container Images Mq Operator Supplied Mq Advanced Container Images

CVE-2026-11829

IBM MQ Buffer Overflow

IBM MQ could allow an authenticated attacker to cause a denial of service due to improper validation of offset values in MQOPEN requests.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

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Ibm

Products

Mq Advanced Container Images Mq Operator Supplied Mq Advanced Container Images

CVE-2026-12343

IBM MQ Denial of Service

IBM MQ could allow an authenticated attacker to cause a denial of service due to improper validation of RFH2 message header fields in queued publish/subscribe operations.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Ibm

Products

Mq Advanced Container Images Mq Operator Supplied Mq Advanced Container Images

CVE-2026-12350

IBM MQ Deserialization of Untrusted Data

IBM MQ could allow an authenticated attacker to cause a denial of service by sending a specially crafted asynchronous consume request that crashes the queue manager agent process.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

Vendors

Ibm

Products

Mq Advanced Container Images Mq Operator Supplied Mq Advanced Container Images

CVE-2026-12660

IBM MQ Path Traversal

IBM MQ Web Console could allow an authenticated administrator to write files outside the intended directory due to improper path validation.

CVSS 3.1 · 2.7 Low EPSS < 1% KEV · Not listed

Vendors

Ibm

Products

Mq Advanced Container Images Mq Operator Supplied Mq Advanced Container Images

CVE-2026-12669

IBM MQ Out-of-bounds Read

IBM MQ could allow an authenticated attacker to trigger a minor out-of-bounds read when sending malformed compressed data, though the data is not disclosed and the request is rejected.

CVSS 3.1 · 3.1 Low EPSS < 1% KEV · Not listed

Vendors

Ibm

Products

Mq Advanced Container Images Mq Operator Supplied Mq Advanced Container Images

CVE-2026-12670

IBM MQ Denial of Service

IBM MQ could allow an authenticated attacker to cause a denial of service through a specially crafted message that triggers excessive memory operations during character set conversion.

CVSS 3.1 · 5.3 Medium EPSS < 1% KEV · Not listed

Vendors

Ibm

Products

Mq Advanced Container Images Mq Operator Supplied Mq Advanced Container Images

CVE-2026-12727

IBM MQ Buffer Overflow

IBM MQ could allow an authenticated attacker to cause potential process instability due to an off-by-one buffer overflow when processing specially crafted object names.

CVSS 3.1 · 4.3 Medium EPSS < 1% KEV · Not listed

Vendors

Ibm

Products

Mq Advanced Container Images Mq Operator Supplied Mq Advanced Container Images

CVE-2026-10572

IBM MQ Buffer Overflow

IBM MQ could allow an authenticated attacker to cause a denial of service or potentially execute arbitrary code due to a heap buffer overflow when processing MQPUT operations with malformed message options.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

Vendors

Ibm

Products

Mq Advanced Container Images Mq Operator Supplied Mq Advanced Container Images

CVE-2026-10743

IBM MQ Race Condition

IBM MQ could allow an authenticated attacker to cause a denial of service or corrupt memory due to improper validation of buffer sizes in MQOPEN operations.

CVSS 3.1 · 8.8 High EPSS < 1% KEV · Not listed

Vendors

Ibm

Products

Mq Advanced Container Images Mq Operator Supplied Mq Advanced Container Images

CVE-2026-11828

IBM MQ Buffer Overflow

IBM MQ could allow a remote attacker with queue manager control or man-in-the-middle access on unencrypted channels to cause a denial of service in client applications using asynchronous message consumption due to improper validation of queue name length values.

CVSS 3.1 · 5.9 Medium EPSS < 1% KEV · Not listed

Vendors

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Products

Mq Advanced Container Images Mq Operator Supplied Mq Advanced Container Images

CVE-2026-2607

Multiple vulnerabilities in IBM MQ Operator and Queue manager container images

IBM MQ Operator SC2: v3.2.0 through 3.2.23CD:  v3.3.0, v3.4.0, v3.4.1, v3.5.0, v3.5.1 - v3.5.3, v3.6.0 - v3.6.4, v3.7.0 - v3.7.2, v3.8.0, v3.8.1, v3.9.0, v3.9.1LTS: v2.0.0 - 2.0.29 and IBM supplied MQ Advanced container images SC2: 9.4.0.6 through r1, 9.4.0.6-r2, 9.4.0.7-r1, 9.4.0.10-r1, 9.4.0.10-r2, 9.4.0.11-r1, 9.4.0.11-r2, 9.4.0.11-r3, 9.4.0.12-r1, 9.4.0.15-r1 - 9.4.0.15-r4, 9.4.0.16-r1, 9.4.0.16-r2, 9.4.0.17-r1, 9.4.0.17-r2, 9.4.0.20-r1CD: 9.4.1.0-r1, 9.4.1.0-r2, 9.4.1.1-r1, 9.4.2.0-r1, 9.4.2.0-r2, 9.4.2.1-r1, 9.4.2.1-r2, 9.4.3.0-r1, 9.4.3.0-r2, 9.4.3.1-r1 - 9.4.3.1-r3, 9.4.4.0-r1 - 9.4.4.0-r4, 9.4.4.1-r1, 9.4.5.0-r1, 9.4.5.0-r2LTS: 9.3.0.0-r1, 9.3.0.0-r2, 9.3.0.0-r3, 9.3.0.1-r1, 9.3.0.1-r2, 9.3.0.1-r3, 9.3.0.1-r4, 9.3.0.3-r1, 9.3.0.4-r1, 9.3.0.4-r2, 9.3.0.5-r1, 9.3.0.5-r2, 9.3.0.5-r3, 9.3.0.6-r1, 9.3.0.10-r1, 9.3.0.10-r2, 9.3.0.11-r1,9.3.0.11-r2, 9.3.0.15-r1, 9.3.0.16-r1, 9.3.0.16-r2, 9.3.0.17-r1, 9.3.0.17-r2, 9.3.0.17-r3, 9.3.0.20-r1, 9.3.0.20-r2, 9.3.0.21-r1, 9.3.0.21-r2, 9.3.0.21-r3, 9.3.0.25-r1, 9.4.0.0-r1, 9.4.0.0-r2, 9.4.0.0-r3, 9.4.0.5-r1, 9.4.0.5-r2 IBM MQ stores potentially sensitive information in log files that could be read by a local user.

CVSS 3.1 · 5.1 Medium EPSS < 1% KEV · Not listed

Vendors

Ibm

Products

Mq Operator Supplied Mq Advanced Container Images

CVE-2025-12755

Multiple vulnerabilities in IBM MQ Operator and Queue manager container images

IBM MQ Operator (SC2 v3.2.0–3.8.1, LTS v2.0.0–2.0.29) and IBM‑supplied MQ Advanced container images (across affected SC2, CD, and LTS 9.3.x–9.4.x releases) contain a vulnerability where log messages are not properly neutralized before being written to log files. This flaw could allow an unauthorized user to inject malicious data into MQ log entries, potentially leading to misleading logs, log manipulation, or downstream log‑processing issues.

CVSS 3.1 · 4 Medium EPSS < 1% KEV · Not listed

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Products

Mq Advanced Mq Operator

CVE-2025-1333

IBM MQ Operator information disclosure

IBM MQ Container when used with the 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 and configured with Cloud Pak for Integration Keycloak could disclose sensitive information to a privileged user.

CVSS 3.1 · 6 Medium EPSS < 1% KEV · Not listed

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Ibm

Products

Mq Operator Supplied Mq Advanced Container Images

CVE-2025-27365

IBM MQ Operator denial of service

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.

CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed

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Ibm

Products

Mq Operator Supplied Mq Advanced Container Images

CVE-2025-36041

IBM MQ improper certificate validation

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 through 3.5.3, and MQ Operator SC2 3.2.0 through 3.2.12 Native HA CRR could be configured with a private key and chain other than the intended key which could disclose sensitive information or allow the attacker to perform unauthorized actions.

CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed

Vendors

Ibm

Products

Mq Operator Supplied Mq Advanced Container Images