Out-of-bounds write in OpenEXR - #VU141357
Published: August 8, 2026
Vulnerability identifier: #VU141357
CSH Severity: Medium
CVSS v4: 5.7 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-787
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 out-of-bounds write in OpenEXR::InputFile::rawPixelDataToBuffer() / ScanLineInputFile::rawPixelDataToBuffer() when processing a crafted EXR file with a negative signed pixelDataSize value supplied by the caller. A remote attacker can trick the victim into opening a crafted file to cause a denial of service.
User interaction is required, and exploitation depends on a consuming application passing an unchecked negative signed size into the public raw-pixel API.
Affected software
OpenEXR
Remediation
Install security update from vendor's website.
OpenEXR - addressed in versions 3.2.11, 3.3.13, 3.4.14