This vulnerability (CVE-2026-7300) in RTI Connext Professional arises from improper handling of input size during buffer copy operations, classified under CWE-120. It affects specific versions of the product (6.1.2, 7.0.0, and 7.4.0) and can cause a buffer overflow leading to filter failure. The CVSS 4.0 base score is 8.8, indicating a high severity with network attack vector, low complexity, no privileges or user interaction required, and high impact on availability. No vendor advisory or patch information is currently available, and the product is not a cloud service, so remediation depends on vendor updates.

Successful exploitation of this vulnerability could allow an attacker to cause a buffer overflow in the Web Integration Service component, potentially leading to denial of service or other impacts on availability. The CVSS score reflects high impact on availability with limited confidentiality and integrity impact. There are no known exploits in the wild currently.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no official fix or temporary workaround is provided, monitoring vendor communications for updates is recommended. No specific mitigations are indicated by the vendor at this time.