---
id: CVE-2026-18462
title: >-
  Integer Overflow or Wraparound, Improper Access Control vulnerability in RTI
  Connext Professional (Core Libraries) allows Shared Resource Manipulation
summary: >-
  Integer Overflow or Wraparound, Improper Access Control vulnerability in RTI
  Connext Professional (Core Libraries) allows Shared Resource Manipulation.
  This issue affects Connext Professional: from 7.4.0 before 7.7.0.1, from 7.0.0
  before…
severity: high
cvss: 7.3
cvssVector: 'CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'
cwe:
  - CWE-190
  - CWE-284
vendor: RTI
product: connext_professional
affected:
  - connext_professional >= 7.4.0 < 7.7.0.1
  - connext_professional >= 7.0.0 < 7.3.1.6
  - connext_professional >= 6.1.0 < 6.1.*
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-2026-18462'
references:
  - url: 'https://www.rti.com/vulnerabilities/#cve-2026-18462'
    label: 3f572a00-62e2-4423-959a-7ea25eff1638
tags:
  - nvd
  - cve.org
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: total
  timestamp: '2026-09-22T18:46:25.315670Z'
cvssSource: cna
ingestedAt: '2026-09-22T18:08:12.474Z'
epss: 0.00081
epssPercentile: 0.00179
---

## Overview

Integer Overflow or Wraparound, Improper Access Control vulnerability in RTI Connext Professional (Core Libraries) allows Shared Resource Manipulation. 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.*.

## Remediation

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