Quick answers
- Is CVE-2026-43903 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-43903 being exploited in the wild.
- How severe is CVE-2026-43903?
- 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, < 3.2.0.2.
- Is there a fix for CVE-2026-43903?
- 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-2026-43903 attacked?
- It is attacked with local access, in a software library.
- Am I affected by CVE-2026-43903?
- 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 buffer overflow exists in the SGI RLE (Run-Length Encoding) decoder within `sgiinput.cpp`. The vulnerability stems from the use of `OIIO_DASSERT` for bounds checking in the RLE decode loop; in release builds, this macro evaluates to a no-op, effectively removing all safety checks. An attacker can craft an SGI file with an RLE count that exceeds the scanline width, leading to an out-of-bounds write to the heap. This can result in memory corruption, application crashes, or potential code execution. The issue is fixed in versions 3.0.18.0, 3.1.13.0, and 3.2.0.2 by replacing assertions with mandatory runtime checks.
Affected products
- Academy Software Foundation OpenImageIO < 3.0.18.0, < 3.1.13.0, < 3.2.0.2
Timeline
- 2026-05-03: advisory: GitHub advisory published by maintainer
- 2026-05-14: disclosed: CVE published to NVD