This vulnerability (CWE-121) in RTI Connext Professional Core Libraries is a stack-based buffer overflow affecting versions >=7.4.0 <7.7.0.1, >=7.0.0 <7.3.1.6, exactly 6.1.0, 6.0.0, 5.3.0, 5.2.0, and 4.3x before 5.1.0. The flaw allows an attacker to overflow buffers on the stack, potentially leading to arbitrary code execution or denial of service. The CVSS 4.0 base score is 10.0, indicating critical severity with network attack vector, no required privileges or user interaction, and high impact on all security properties. No known exploits in the wild have been reported. No patch or remediation information is provided in the source data.

Successful exploitation can lead to complete compromise of confidentiality, integrity, and availability of the affected system due to stack-based buffer overflow. The vulnerability can be triggered remotely without authentication or user interaction, making it highly severe.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or patch links are provided, users should monitor RTI's official channels for updates. Until a patch is available, consider restricting network access to affected components to reduce exposure.