Quick answers
- Is CVE-2026-43906 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-43906 being exploited in the wild.
- How severe is CVE-2026-43906?
- High severity, with a CVSS score of 7.8, published 14 May 2026.
- Which products and versions are affected?
- Academy Software Foundation OpenImageIO < 3.0.18.0, < 3.1.13.0, Prior to 3.0.18.0 and 3.1.13.0.
- Is there a fix for CVE-2026-43906?
- No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
- How is CVE-2026-43906 attacked?
- It is attacked with local access, in a software library.
- Am I affected by CVE-2026-43906?
- Check whether you run Academy Software Foundation OpenImageIO at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
A heap-based buffer overflow (CWE-122) exists in the HEIF decoder component of OpenImageIO. The vulnerability is triggered by a subimage metadata mismatch during the processing of HEIF files, specifically within the `HeifInput::read_native_scanline` function in `heifinput.cpp`. An attacker can exploit this by providing a maliciously crafted HEIF image that causes an out-of-bounds write during a `memcpy` operation. This requires local execution or user interaction (opening the file) and can result in memory corruption or arbitrary code execution. The issue is resolved in versions 3.0.18.0 and 3.1.13.0.
Affected products
- Academy Software Foundation OpenImageIO < 3.0.18.0, < 3.1.13.0
Timeline
- 2026-05-03: advisory: GitHub advisory published by maintainers
- 2026-05-14: disclosed: CVE published to NVD