What’s Vulnerable › Vulnerabilities

CVE-2026-43904: OpenImageIO: Softimage PIC RLE decoder heap buffer overflow — longCount not clamped to image width

• Severity: high (CVSS 7.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.2% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2026-05-14 · updated 2026-10-26
• Weakness: CWE-787

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, softimageinput.cpp:469 (mixed RLE) and :345 (pure RLE) do not clamp the run length to remaining scanline width before writing pixels. The raw packet path (line 403) correctly clamps with std::min, but RLE paths skip this check. A crafted .pic file causes heap overflow up to 65535 bytes. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0.

Affected products

• OpenImageIO Project OpenImageIO: before 3.0.18.0; from 3.1.4.0 before 3.1.13.0 — fixed in 3.0.18.0, 3.1.13.0

How to fix

Upgrade to a fixed version: OpenImageIO Project OpenImageIO 3.0.18.0, 3.1.13.0. Check the vendor advisory for mitigations.

References

• https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-4499-j545-7q33
• https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-4499-j545-7q33

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