CVE-2026-43996
mediumpriority · track · 0EPSS 0.002 · 7 %ileEUUSEPSS · scored 2026-10-28
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, the bounds check in TGAInput::decode_pixel computes k + palbytespp as unsigned 32-bit arithmetic. When k = 0xFFFFFFFC and palbytespp = 4, the addition wraps to 0, which compares less than palette_alloc_size and passes the check. The subsequent palette access uses the unwrapped k (0xFFFFFFFC) as the index, reading ~4 GB past the start of the palette buffer — SEGV. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0.
cvss
Technical severity, 0–10. One row per scoring source.
base score 0–10 · higher = more severe · hover a vector to decode
ssvc
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weaknesses
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affected products (6)
Products and version ranges known to be affected.
also known as (2)
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sources
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references (4)
External citations — patches, advisories, analysis.
- https://nvd.nist.gov/vuln/detail/CVE-2026-43996cnnvd
- https://openimageio.readthedocs.io/en/v3.1.12.0/Patchcnnvd
- https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-mq8j-73c4-cr55enisa_euvd
- https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-mq8j-73c4-cr55ExploitVendor Advisorynvd
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