Quick answers
- Is CVE-2026-65969 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-65969 being exploited in the wild.
- How severe is CVE-2026-65969?
- Medium severity, with a CVSS score of 5.5, published 18 September 2026.
- Which products and versions are affected?
- Academy Software Foundation OpenImageIO before 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1.
- Is there a fix for CVE-2026-65969?
- A patch was published on 2026-07-06: Fix merged in version 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-65969 attacked?
- It is attacked with local access, in a software library.
- Am I affected by CVE-2026-65969?
- 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
The GifSplitPalette() function in OpenImageIO computes `numPixels * (splitElt - firstElt)` in signed 32-bit arithmetic, causing integer overflow for images larger than approximately 16.9 megapixels (e.g., 4117×4117). This overflow produces a bogus negative or garbage split count that drives out-of-bounds array indexing during GIF palette construction. The vulnerability is triggered when processing a truncated TGA file that leaves a pending GIF frame to be processed during output close, resulting in a process crash.
Affected products
- Academy Software Foundation OpenImageIO before 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1
Timeline
- 2026-09-18: disclosed: CVE-2026-65969 published
- 2026-07-06: patched: Fix merged in version 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1