Quick answers
- Is CVE-2026-59181 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-59181 being exploited in the wild.
- How severe is CVE-2026-59181?
- Medium severity, with a CVSS score of 6.1, published 18 September 2026.
- Which products and versions are affected?
- Academy Software Foundation OpenImageIO prior to 3.0.20.0, 3.1.15.0, and 3.2.0.3-beta1.
- Is there a fix for CVE-2026-59181?
- A patch was published on 2026-06-27: Fix merged in commit 908f22f5528e88e5e96184c194caa26b54b2b85f Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-59181 attacked?
- It is attacked over the network, in a software library.
- Am I affected by CVE-2026-59181?
- 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 stack buffer overflow exists in cineoninput.cpp's CineonInput::open() function, where a user-supplied numberOfElements value from a malicious Cineon file is used as a loop bound without validation against the format's maximum of 8, causing writes beyond the fixed-size strings[8] array. An attacker can craft a Cineon image file with an oversized numberOfElements to trigger memory corruption and denial of service. The vulnerability is fixed by adding bounds checking on the numberOfElements value.
Affected products
- Academy Software Foundation OpenImageIO prior to 3.0.20.0, 3.1.15.0, and 3.2.0.3-beta1
Timeline
- 2026-09-18: disclosed
- 2026-06-27: patched: Fix merged in commit 908f22f5528e88e5e96184c194caa26b54b2b85f