Out-of-bounds write in OpenEXR - #VU141335
Published: August 8, 2026
Vulnerability identifier: #VU141335
CSH Severity: Medium
CVSS v4: 6.8 [CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:N/VI:L/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 and overwrite heap memory.
The vulnerability exists due to an out-of-bounds write in the exrmetrics tool initTiled() tiled channel buffer handling when parsing a crafted tiled EXR file on ILP32 builds. A remote attacker can trick the victim into opening a crafted file to cause a denial of service and overwrite heap memory.
User interaction is required to process a crafted tiled EXR file, and the issue is specific to ILP32 builds.
Affected software
OpenEXR
Remediation
Install security update from vendor's website.
OpenEXR - addressed in versions 3.3.13, 3.4.14