---
id: CVE-2026-11389
title: >-
  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
summary: >-
  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 Co…
severity: medium
cvss: 6.8
cvssVector: 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'
cwe:
  - CWE-125
  - CWE-685
  - CWE-843
vendor: RTI
product: connext_professional
affected:
  - connext_professional >= 7.4.0 < 7.7.0.1
  - connext_professional >= 7.3.0 < 7.3.1.6
published: '2026-09-22'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T19:37:36.747'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-11389'
references:
  - url: 'https://www.rti.com/vulnerabilities/#cve-2026-11389'
    label: 3f572a00-62e2-4423-959a-7ea25eff1638
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-09-22T18:49:09.272083Z'
cvssSource: cna
ingestedAt: '2026-09-22T18:08:12.477Z'
epss: 0.00104
epssPercentile: 0.00947
---

## Overview

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.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.