CVE-2026-43903: OpenImageIO: SGI RLE decoder heap buffer overflow OIIO_DASSERT bounds checks are no-ops in release builds
Last updated 18 June 2026
Other sources
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, sgiinput.cpp:265,274 use OIIODASSERT for bounds checking in the RLE decode loop. In release builds, OIIODASSERT compiles to ((void)sizeof(x)) (dassert.h:210), making all bounds checks no-ops. A crafted .sgi file with RLE count exceeding scanline width causes heap buffer overflow and crash. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0.
— MITRE
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
debian/openimageioto a version that resolves this vulnerability.Fixed in 3.0.18.0 - Upgrade
Upgrade
debian/openimageioto a version that resolves this vulnerability.Fixed in 3.1.13.0
Event History
Frequently Asked Questions
What is the severity of CVE-2026-43903?
CVE-2026-43903 is a high-severity vulnerability due to a heap buffer overflow in OpenImageIO.
How do I fix CVE-2026-43903?
To fix CVE-2026-43903, upgrade to OpenImageIO version 3.0.18.0 or 3.1.13.0 or later.
What versions of OpenImageIO are affected by CVE-2026-43903?
CVE-2026-43903 affects OpenImageIO versions prior to 3.0.18.0 and versions between 3.1.4.0 and 3.1.13.0.
What systems are vulnerable to CVE-2026-43903?
Any system running affected versions of OpenImageIO is vulnerable to CVE-2026-43903.
What type of attack can exploit CVE-2026-43903?
CVE-2026-43903 can be exploited through specially crafted image files that can trigger the heap buffer overflow.