CVE-2026-18457
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Heap-based Buffer Overflow in RTI Connext Professional

Publication date: 2026-09-22

Last updated on: 2026-09-22

Assigner: RTI

Description
Heap-based Buffer Overflow vulnerability in RTI Connext Professional (Core Libraries) allows Overflow Buffers. This issue affects Connext Professional: from 7.4.0 before 7.7.0.1, from 7.0.0 before 7.3.1.6, from 6.1.0 before 6.1.*, from 6.0.0 before 6.0.*, from 5.3.0 before 5.3.*, from 5.2.3 before 5.2.*.

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Meta Information

Published
2026-09-22
Last Modified
2026-09-22
Generated
2026-10-13
AI Q&A
2026-09-22
EPSS Evaluated
2026-10-11
NVD
CVE-2026-18457
EUVD
EUVD-2026-84612

Affected Vendors & Products

Showing 6 associated CPEs
Vendor Product Version / Range
rti connext_professional From 7.4.0 (inc) to 7.7.0.1 (exc)
rti connext_professional From 7.0.0 (inc) to 7.3.1.6 (exc)
rti connext_professional From 6.1.0 (inc) to 6.1.* (exc)
rti connext_professional From 6.0.0 (inc) to 6.0.* (exc)
rti connext_professional From 5.3.0 (inc) to 5.3.* (exc)
rti connext_professional From 5.2.3 (inc) to 5.2.* (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-122 A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

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Executive Summary

This is a heap-based buffer overflow vulnerability in RTI Connext Professional (Core Libraries). It allows attackers to overflow buffers, potentially leading to arbitrary code execution or denial of service. The issue affects multiple versions of Connext Professional, specifically those before 7.7.0.1, 7.3.1.6, 6.1.*, 6.0.*, 5.3.*, and 5.2.3.

Detection Guidance

This vulnerability is specific to RTI Connext Professional versions before 7.7.0.1, 7.3.1.6, 6.1.*, 6.0.*, 5.3.*, and 5.2.3. Detection involves checking installed versions of RTI Connext Professional. Use commands like 'rtiddsgen -version' or inspect installation directories for version files. Ensure no affected versions are running on your system.

Impact Analysis

An attacker could exploit this vulnerability to execute arbitrary code on your system, crash applications, or gain unauthorized access. This could lead to data breaches, system compromise, or disruption of services if you are using an affected version of RTI Connext Professional.

Compliance Impact

The provided CVE data does not specify direct impacts on compliance with standards like GDPR or HIPAA. However, a heap-based buffer overflow could potentially lead to unauthorized data access or corruption, which may violate confidentiality and integrity requirements under such regulations.

Mitigation Strategies

Update RTI Connext Professional to a patched version (7.7.0.1 or later, 7.3.1.6 or later, or 6.1.*/6.0.*/5.3.*/5.2.3 or later depending on your current version).

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