Out-of-bounds read in Visualization Toolkit (VTK) - CVE-2026-9535
Published: November 3, 2026
Vulnerability identifier: #VU158763
CSH Severity: High
CVSS v4: 8.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-9535
CWE-ID: CWE-125
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to gain access to potentially sensitive information.
The vulnerability exists due to a boundary condition in the vtkChacoReader InputGraph2 functionality. A remote attacker can use a specially crafted chaco, trigger an out-of-bounds read error and read contents of memory on the system or perform a denial of service (DoS) attack..
Affected software
Visualization Toolkit (VTK)
How to mitigate CVE-2026-9535
Install updates from vendor's website.
Visualization Toolkit (VTK) - update to 9.7.1