---
id: CVE-2026-9535
title: >-
  A out-of-bounds read vulnerability exists in the vtkChacoReader InputGraph2
  functionality of vtk (version(s): 9.6.1)
summary: >-
  A out-of-bounds read vulnerability exists in the vtkChacoReader InputGraph2
  functionality of vtk (version(s): 9.6.1). A specially crafted chaco can lead
  to an out-of-bounds read. An attacker can provide a malicious file to trigger
  this v…
severity: high
cvss: 8.2
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H'
cvssSource: cna
cwe:
  - CWE-125
vendor: vtk
product: vtk
affected:
  - vtk 9.6.1
ssvc:
  exploitation: none
  automatable: 'yes'
  technicalImpact: partial
  timestamp: '2026-10-30T17:20:34.812139Z'
published: '2026-10-29'
updated: '2026-10-30'
sourceUpdated: '2026-10-30T17:20:44.742Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-9535'
references:
  - url: 'https://talosintelligence.com/vulnerability_reports/TALOS-2026-2423'
    label: 'https://talosintelligence.com/vulnerability_reports/TALOS-2026-2423'
  - url: 'https://vtk.org/download/'
    label: 'https://vtk.org/download/'
tags:
  - cve.org
epss: 0.00258
epssPercentile: 0.17574
ingestedAt: '2026-11-05T16:24:31.230Z'
---

## Overview

A out-of-bounds read vulnerability exists in the vtkChacoReader InputGraph2 functionality of vtk (version(s): 9.6.1). A specially crafted chaco can lead to an out-of-bounds read. An attacker can provide a malicious file to trigger this vulnerability.

## Affected

- `vtk 9.6.1`

## Remediation

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