CVE-2026-18458

Medium

Description

Out-of-bounds Read, Function Call With Incorrect Number of Arguments, Access of Resource Using Incompatible Type ('Type Confusion') vulnerability in RTI Connext Professional (Core Libraries) allows Overread Buffers. This issue affects Connext Professional: from 7.4.0 before 7.7.0.1, from 7.3.0 before 7.3.1.6, from 6.1.2.21 before 6.1.*.

SeverityMedium

CVSS6.8

Exploit probability—

ProductConnext Professional

PublishedSep 22, 2026

First seenSep 22, 2026

Weakness typeCWE-125Out-of-bounds read CWE-685CWE-685 CWE-843CWE-843

How to fix

Update

RTI Connext Professional7.7.0.1, 7.3.1.6, 6.1.* or later

Affected products

Product	Affected versions	Fixed in
RTI Connext Professional	7.4.0 ≤ v < 7.7.0.1, 7.3.0 ≤ v < 7.3.1.6, 6.1.2.21 ≤ v < 6.1.*	7.7.0.1, 7.3.1.6, 6.1.*

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