CVE-2026-43906 OpenImageIO: HEIF Heap overflow

What is CVE-2026-43906?

CVE-2026-43906 is a high-severity memory corruption vulnerability in Openimageio Openimageio, published on 14 May 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

Official description

OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.18.0 and 3.1.13.0, a heap-based buffer overflow in the HEIF decoder of OpenImageIO allows out-of-bounds writes via crafted images due to a subimage metadata mismatch, leading to memory corruption and potential code execution. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0.

Weakness: CWE-122

Which versions are affected by CVE-2026-43906?

It affects 1 product.

Products include Openimageio Openimageio.

How do I fix CVE-2026-43906?

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-2026-43906 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-43906 exists.

Other vulnerabilities in Openimageio Openimageio

• CVE-2024-55192 Memory corruption in n/a Critical 9.8
• CVE-2024-55194 Memory corruption in n/a Critical 9.8
• CVE-2023-42299 Memory corruption in n/a Critical 9.8
• CVE-2022-38143 Memory corruption in OpenImageIO Critical 9.8
• CVE-2026-43908 OpenImageIO: Signed integer overflow in ConvertCbYCrYToRGB leads to heap out-of-bounds write in DPX 4:2:2 decoder High 8.8

All Openimageio Openimageio vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as DEBIAN-CVE-2026-43906, GHSA-gmrp-x952-3m66, UBUNTU-CVE-2026-43906.