Quick answers
- Is CVE-2026-63422 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-63422 being exploited in the wild.
- How severe is CVE-2026-63422?
- High severity, with a CVSS score of 7.8, 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-2026-63422?
- A patch was published on 2026-07-15: Fix committed to main branch Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-63422 attacked?
- It is attacked with local access, in a software library.
- Am I affected by CVE-2026-63422?
- 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 vulnerability exists in OpenImageIO's read_native_tiles() function, which incorrectly uses tile-padded scanline stride instead of the user's requested rectangle width when copying partial edge tiles, resulting in out-of-bounds heap writes. The flaw affects tiled OpenEXR images with non-tile-aligned dimensions when read_native_tiles() is called. An attacker can craft a malicious EXR file to trigger this overflow; no authentication or special privileges are required, only that the application reads the image via the vulnerable code path.
Affected products
- Academy Software Foundation OpenImageIO before 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1
Timeline
- 2026-07-15: patched: Fix committed to main branch
- 2026-09-18: disclosed