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TI-2026-82706 Aliases CVE-2026-9535GHSA-fhxg-fr48-97cc

Out-of-bounds read in vtkChacoReader InputGraph2 in VTK

Priority MEDIUM 41CWE-125Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
—
Confidentiality · integrity · availability
Low · None · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA.

Summary

VTK version 9.6.1 contains an out-of-bounds read in the vtkChacoReader InputGraph2 functionality. A specially crafted Chaco file can cause the reader to read memory past the end of a buffer (CWE-125). An unauthenticated remote attacker can trigger it by providing a malicious file to the application.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00258 17th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
vtkvtk9.6.1—No fix listedCNA
  • vtk Vendorvtk Affected 9.6.1 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for vtk.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Vendor assessments

Red Hat

Red Hat's page for this CVE →

Not affected: 1 product
  • Red Hat

Timeline

  1. 2026-10-29 Threatist record created from CVE-2026-9535
  2. 2026-10-29 Alias added: GHSA-fhxg-fr48-97cc
  3. 2026-10-30 CISA SSVC decision points changed
  4. 2026-10-30 Priority changed: MEDIUM → LOW
  5. 2026-10-31 Priority changed: LOW → MEDIUM
  6. 2026-11-06 Affected versions changed · Red Hat
  7. 2026-11-06 CVSS score added · Red Hat

References

Other 2

  • TI-2025-35446 Kitware VTK (Visualization Toolkit) through 9.5.0 contains a heap use-after-free… CVSS 3.1CRITICAL 9.8
  • TI-2025-35445 Kitware VTK (Visualization Toolkit) through 9.5.0 contains a heap buffer overflow… CVSS 3.1HIGH 7.1
  • TI-2026-82709 Invalid pointer dereference in VTK PNG reader causes denial of service CVSS 3.1HIGH 7.5
  • TI-2026-82708 Invalid pointer dereference in VTK PNG reader causes denial of service CVSS 3.1HIGH 7.5
  • TI-2026-82707 Heap-based buffer overflow in VTK vtkWindBladeReader CVSS 3.1HIGH 7.5
  • TI-2026-82705 Out-of-bounds write in VTK BMP reader can corrupt memory CVSS 3.1HIGH 7.5
See all 10 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences