CVE-2026-43996

published 2026-05-14

CVE-2026-43996: 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…

Priority P4 23 medium 5.5 CVSS 3.1

AV L AC L PR N UI R S U C N I N A H

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.

Affected

6 ranges

Vendor	Product	Version range	Fixed in
academysoftwarefoundation	openimageio	< 3.0.18.0	3.0.18.0
academysoftwarefoundation	openimageio	—	—
openimageio	openimageio	< 3.0.18.0	3.0.18.0
openimageio	openimageio	—	—
openimageio	openimageio	—	—
openimageio	openimageio	>= 3.1.0.0 < 3.1.13.0	3.1.13.0

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CWE-125