What’s Vulnerable › Vulnerabilities

CVE-2026-113681: OpenImageIO before 3.0.20.0, 3.1.x before 3.1.15.0, and 3.2.x before 3.2.0.3-beta1 Cineon Reader Heap Out-of-Bounds Read

• Severity: medium (CVSS 5.5 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: none known
• Published: 2026-10-20 · updated 2026-10-20
• Weakness: CWE-190

Description

OpenImageIO before 3.0.20.0, 3.1.x before 3.1.15.0, and 3.2.x before 3.2.0.3-beta1 contains an integer overflow in cineon::Codec::Read that undersizes the scanline buffer, causing a heap out-of-bounds read. Attackers can supply a crafted Cineon file with a huge declared width that wraps the size calculation to zero, so UnPackPacked reads past a 4-byte buffer and crashes the application.

Affected products

• OpenImageIO Project OpenImageIO: before 3.0.20.0; from 3.1.0.0 before 3.1.15.0; from 3.2.0.0-dev before 3.2.0.3-beta1 — fixed in 3.0.20.0, 3.1.15.0, 3.2.0.3-beta1

How to fix

Upgrade to a fixed version: OpenImageIO Project OpenImageIO 3.0.20.0, 3.1.15.0, 3.2.0.3-beta1. Check the vendor advisory for mitigations.

References

• https://github.com/AcademySoftwareFoundation/OpenImageIO/blob/v3.0.19.0/src/cineon.imageio/libcineon/Codec.cpp#L79-L82
• https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/07e3c3e0373551c57e7d8e01353deaa4b3646613
• https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/5567
• https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/5568
• https://www.vulncheck.com/advisories/openimageio-before-3.0.20.0-3.1-x-before-3.1.15.0-and-3.2-x-before-3.2.0.3-beta1-cineon-reader-heap-out-of-bounds-read

Get alerted when CVE-2026-113681 or the next vulnerability affects your stack