CVE-2026-11388 in Connext Professional
Summary
by MITRE • 09/22/2026
Double Free vulnerability in RTI Connext Professional (Core Libraries) allows File Manipulation. This issue affects Connext Professional: from 7.4.0 before 7.7.0.1, from 7.1.0 before 7.3.1.6.
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Analysis
by VulDB Data Team • 09/22/2026
The vulnerability identified in RTI Connext Professional Core Libraries represents a critical memory management flaw classified as a double free error. This specific type of defect occurs when the same block of heap memory is freed more than once, leading to undefined behavior within the application runtime environment. In the context of networked middleware like RTI Connext DDS, which facilitates real-time data distribution across distributed systems, such low-level memory corruption can have severe consequences for system stability and security integrity. The affected versions span from 7.4.0 up to but not including 7.7.0.1, as well as the older branch ranging from 7.1.0 up to but not including 7.3.1.6, indicating that this issue has persisted across multiple major releases and requires immediate attention for organizations relying on these specific versions for their industrial or enterprise infrastructure.
From a technical perspective, double free vulnerabilities are particularly dangerous because they allow an attacker to manipulate the heap metadata structure used by the memory allocator. When a pointer is freed twice, the first deallocation marks the memory block as available, while the second attempt may overwrite adjacent heap structures or corrupt internal pointers maintained by the allocator. This corruption can be exploited to achieve arbitrary code execution or, in this specific instance, file manipulation. The attacker likely leverages the corrupted state of the memory manager to redirect control flow or write data to unintended locations on the filesystem. Since RTI Connext often runs with elevated privileges to manage real-time communication channels and access hardware resources, successful exploitation could allow an unauthorized user to modify critical configuration files, inject malicious payloads into system directories, or alter log files to cover tracks of further intrusion activities.
The operational impact of this vulnerability extends beyond simple application crashes or denial of service scenarios typically associated with memory corruption bugs. The ability to manipulate files implies a breach of data integrity and potentially confidentiality depending on the nature of the files accessed. In industrial control systems or financial trading platforms where RTI Connext is commonly deployed, unauthorized modification of configuration parameters could lead to operational disruptions, incorrect sensor readings being processed, or trade execution errors. Furthermore, if an attacker can write executable code into a directory that is subsequently loaded by the middleware process, they effectively gain persistent access to the system. This transforms a memory safety issue into a full-scale compromise of the host environment, undermining the trust model inherent in secure distributed systems architectures.
This vulnerability aligns with Common Weakness Enumeration identifier CWE-415, which defines double free as a weakness where an object is freed more than once, leading to heap corruption and potential code execution. Additionally, from a tactical perspective related to the MITRE ATT&CK framework, this flaw facilitates techniques associated with Defense Evasion through file manipulation or Privilege Escalation if the resulting file changes allow for further system compromise. The exploitation path likely involves crafting malformed DDS messages that trigger the specific memory deallocation sequence within the Core Libraries during message processing or participant management operations. Attackers would need to interact directly with the DDS endpoints, suggesting that this vulnerability is most critical in environments where untrusted clients can connect to the middleware services without rigorous authentication and input validation mechanisms already in place at higher layers of the network stack.
Mitigation strategies must prioritize immediate patching by upgrading RTI Connext Professional to version 7.7.0.1 or later, or alternatively to version 7.3.1.6 if operating within the older supported branch. For organizations unable to upgrade immediately due to certification or compatibility constraints, implementing strict network segmentation is essential to limit exposure to untrusted networks. Deploying intrusion detection systems that monitor for anomalous memory access patterns or malformed DDS packets can provide an additional layer of defense. Furthermore, enforcing least-privilege principles by running RTI Connext processes with minimal necessary filesystem permissions reduces the impact if exploitation occurs. Regular security audits and static analysis tools should be employed to detect similar memory management issues in custom middleware extensions or integrated applications that rely on these core libraries.