---
id: CVE-2026-3894
title: >-
  Out-of-bounds Read vulnerability in RTI Connext Professional (Core Libraries)
  allows Overread Buffers
summary: >-
  Out-of-bounds Read vulnerability in RTI Connext Professional (Core Libraries)
  allows Overread Buffers. This issue affects Connext Professional: from 7.4.0
  before 7.7.0, from 7.0.0 before 7.3.1.3, from 6.1.0 before 6.1.*, from 6.0.0
  befor…
severity: critical
cvss: 9.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H'
cwe:
  - CWE-125
vendor: rti
product: connext_professional
affected:
  - 'connext_professional >= 5.0.0, < 7.7.0'
patched:
  - connext_professional 7.7.0
published: '2026-06-17'
updated: '2026-09-22'
sourceUpdated: '2026-09-22T18:17:14.190'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-3894'
references:
  - url: 'https://www.rti.com/vulnerabilities/#cve-2026-3894'
    label: 3f572a00-62e2-4423-959a-7ea25eff1638
tags:
  - nvd
  - cve.org
epss: 0.00331
epssPercentile: 0.23509
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-06-17T18:01:05.016536Z'
scores:
  nvd: 9.1
  cna: 9.2
ingestedAt: '2026-09-22T18:08:12.482Z'
---

## Overview

Out-of-bounds Read vulnerability in RTI Connext Professional (Core Libraries) allows Overread Buffers. This issue affects Connext Professional: from 7.4.0 before 7.7.0, from 7.0.0 before 7.3.1.3, from 6.1.0 before 6.1.*, from 6.0.0 before 6.0.*, from 5.3.0 before 5.3.*, from 5.2.0 before 5.2.*, from 5.0.0 before 5.1.*.

## Affected

- `connext_professional >= 5.0.0, < 7.7.0`

## Remediation

Upgrade past the affected range:

- `connext_professional 7.7.0`