CVE-2026-43908 OpenImageIO: Signed integer overflow in ConvertCbYCrYToRGB leads to heap out-of-bounds write in DPX 4:2:2 decoder
A signed integer overflow in OpenImageIO's DPX decoder causes an out-of-bounds write, potentially leading to crashes or arbitrary code execution.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- A user has to click or open something
- Fix
- Available
What is CVE-2026-43908?
CVE-2026-43908 is a high-severity vulnerability in Openimageio Openimageio, published on 14 May 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Official description
OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.18.0 and 3.1.13.0, a signed 32-bit integer overflow in the pixel-loop index expression i * 3 inside ConvertCbYCrYToRGB() causes the function to compute a large negative pointer offset into the output buffer, producing an out-of-bounds write that crashes the process. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0.
Which versions are affected by CVE-2026-43908?
It affects 1 product.
Products include Openimageio Openimageio.
How do I fix CVE-2026-43908?
Upgrade to a fixed version.
Is CVE-2026-43908 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-43908 exists.
Other vulnerabilities in Openimageio Openimageio
- CVE-2024-55192 Memory corruption in n/a
- CVE-2024-55194 Memory corruption in n/a
- CVE-2023-42299 Memory corruption in n/a
- CVE-2022-38143 Memory corruption in OpenImageIO
- CVE-2026-43909 OpenImageIO: Signed integer overflow in SwapRGBABytes loop index leads to out-of-bounds read/write in DPX ABGR decoder
Sources
Also known as DEBIAN-CVE-2026-43908, GHSA-2jr5-q49v-3858, UBUNTU-CVE-2026-43908.