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CVE-2026-12665 is a high-severity stack-based buffer overflow vulnerability in IBM MQ Operator. It occurs when processing TLS certificates with malformed distinguished names during channel connection establishment, potentially allowing remote code execution. The vulnerability affects multiple versions of IBM MQ Operator. The CVSS v3.1 score is 8.1, indicating high impact on confidentiality, integrity, and availability.

IBM MQ Operator contains a stack-based buffer overflow vulnerability (CWE-121) triggered by processing TLS certificates with malformed distinguished names during channel connection establishment. This flaw could allow a remote attacker to execute arbitrary code on the affected system. The vulnerability affects a wide range of IBM MQ Operator versions, including multiple minor and patch releases across several major versions. The CVSS 3.1 base score is 8.1, reflecting network attack vector with high impact on confidentiality, integrity, and availability, and requiring no privileges or user interaction but with high attack complexity.

CVE-2026-12665 is a high-severity stack-based buffer overflow vulnerability in IBM MQ Operator. It occurs when processing TLS certificates with malformed distinguished names during channel connection establishment, potentially allowing remote code execution. The vulnerability affects multiple versio

CVE-2026-12665: CWE-121 Stack-based Buffer Overflow in IBM MQ Operator

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