Heap-based buffer overflow in OpenEXR - #VU141337
Published: August 8, 2026
Vulnerability identifier: #VU141337
CSH Severity: Medium
CVSS v4: 6.7 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to cause a denial of service.
The vulnerability exists due to a heap-based buffer overflow in the exrmultipart convert tool when parsing a crafted EXR file on ILP32 builds. A remote attacker can trick the victim into opening a crafted file to cause a denial of service.
The issue is triggered by an allocation-size truncation in channelstore sizing, and user interaction is required to process the crafted EXR file.
Affected software
OpenEXR
Remediation
Install security update from vendor's website.
OpenEXR - addressed in versions 3.2.11, 3.3.13, 3.4.14