Quick answers
- Is CVE-2026-43907 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-43907 being exploited in the wild.
- How severe is CVE-2026-43907?
- High severity, with a CVSS score of 8.3, published 14 May 2026.
- Which products and versions are affected?
- Academy Software Foundation OpenImageIO < 3.0.18.0, < 3.1.13.0.
- Is there a fix for CVE-2026-43907?
- 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-2026-43907 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-43907?
- 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 signed integer overflow exists in the QueryRGBBufferSizeInternal() function within DPXColorConverter.cpp. The function uses 32-bit signed arithmetic with negative multipliers to calculate buffer sizes; for large pixel counts, this calculation overflows and wraps to a small positive value. The caller in dpxinput.cpp interprets this positive value as a valid buffer size and allocates an undersized heap buffer via m_decodebuf.resize(). Subsequent file read operations via fread write the full image data into the undersized buffer, causing a heap buffer overflow. This can be triggered by a remote attacker providing a crafted DPX file, requiring minimal user interaction (opening the file). The issue is fixed 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