Out-of-bounds write in OpenEXR - CVE-2026-59184
Published: August 8, 2026
Vulnerability identifier: #VU141362
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: CVE-2026-59184
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 OpenEXRUtil TypedFlatImageChannel<T>::row() when processing a crafted EXR file with a non-zero dataWindow.min. A remote attacker can trick the victim into opening a crafted file to cause a denial of service.
User interaction is required to open the crafted EXR file, and exploitation depends on downstream code writing rows through FlatHalfChannel::row() on a loaded image.
Affected software
OpenEXR
How to mitigate CVE-2026-59184
Install security update from vendor's website.
OpenEXR - addressed in versions 3.2.11, 3.3.13, 3.4.14