CVE-2026-43996
MEDIUM EPSS 7.4%
Published May 14, 20261mo ago · Modified Jun 17, 20262w ago
5.5 CVSS 3.1
Published May 14, 2026 1mo ago
Last Modified Jun 17, 2026 2w ago
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, 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 Details
Base Score
Exploitability
Impact
Vector string
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H Attack Vector Local
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality None
Integrity None
Availability High
Threat Intelligence
EPSS Exploit Probability
7.4% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available
Weaknesses 1
CWE-125 Out-of-bounds Read Memory Safety
Affected Products 4
| Vendor | Product | Version | Range |
|---|---|---|---|
| openimageio | openimageio | * | <3.0.18.0 |
| openimageio | openimageio | * | ≥3.1.0.0 – <3.1.13.0 |
| openimageio | openimageio | 3.2.0.0 | any |
| openimageio | openimageio | 3.2.0.2 | any |
References 1
- github.com https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-mq8j-73c4-cr55
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.