CVE-2026-59184 OpenEXR: OpenEXRUtil FlatImageChannel row nonzero dataWindow heap OOB write
A crafted EXR file can trigger out-of-bounds or use-after-free writes in OpenEXR, potentially allowing code execution or crashes in applications processing untrusted images.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-59184?
CVE-2026-59184 is a high-severity memory corruption vulnerability in AcademySoftwareFoundation openexr, published on 25 Aug 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
OpenEXR is the reference implementation and specification for the EXR image format, widely used in the motion picture industry. Versions before 3.2.11, 3.3.0 through 3.3.12, and 3.4.0 through 3.4.13 allow a crafted EXR with a nonzero dataWindow.min to make TypedFlatImageChannel::row() return an invalid heap pointer, causing out-of-bounds or use-after-free writes. This occurs when an application writes rows through FlatHalfChannel::row(). Affected consumers are tools, converters, render pipeline components, or image-processing services that accept untrusted EXR files and use FlatHalfChannel::row() on loaded images. This issue is fixed in versions 3.2.11, 3.3.13, and 3.4.14.
Which versions are affected by CVE-2026-59184?
How do I fix CVE-2026-59184?
Upgrade to a fixed version.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-59184 being exploited?
There is no known exploitation of CVE-2026-59184 in the wild and no public exploit code.
Sources
Also known as AZL-97640, BELL-CVE-2026-59184, DEBIAN-CVE-2026-59184, ECHO-69d8-1d7c-ac7f, GHSA-pqp9-558c-453q, MINI-hvjc-3h83-28q4 and 4 more.