CVE-2026-65969: CWE-125: Out-of-bounds Read in AcademySoftwareFoundation OpenImageIO
OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A truncated tga can leave a pending gif frame that is processed during output close. gifsplitpalette() computes numpixels multiplied by the palette partition width in signed 32-bit arithmetic; a large image overflows that intermediate, corrupts subpixelsa, and drives an out-of-bounds read while building the gif palette, resulting in a process crash and denial of service. The affected implementation is identified by src/gif.imageio/gif.h, GifSplitPalette(), numPixels, subPixelsA, GIFOutput, and truncated TGA input, which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1.
AI Analysis
Technical Summary
OpenImageIO versions before 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1 contain a vulnerability in the gifsplitpalette() function within src/gif.imageio/gif.h. When handling a truncated TGA input that leaves a pending GIF frame, the calculation of numpixels multiplied by the palette partition width uses signed 32-bit arithmetic, which can overflow for large images. This overflow corrupts the subpixelsa buffer, resulting in an out-of-bounds read during GIF palette construction. The consequence is a process crash and denial of service. The issue is fixed in the stated versions.
Potential Impact
The vulnerability can cause a denial of service via a process crash when processing specially crafted truncated TGA images that trigger the overflow in gifsplitpalette(). There is no indication of confidentiality or integrity impact. The CVSS 3.1 score is 5.5 (medium), reflecting local attack vector, low complexity, no privileges required, user interaction required, unchanged scope, no confidentiality or integrity impact, and high availability impact.
Mitigation Recommendations
This issue is fixed in OpenImageIO versions 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1. Users should upgrade to one of these versions or later to remediate the vulnerability. No other mitigation or workaround is indicated.
CVE-2026-65969: CWE-125: Out-of-bounds Read in AcademySoftwareFoundation OpenImageIO
Description
OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A truncated tga can leave a pending gif frame that is processed during output close. gifsplitpalette() computes numpixels multiplied by the palette partition width in signed 32-bit arithmetic; a large image overflows that intermediate, corrupts subpixelsa, and drives an out-of-bounds read while building the gif palette, resulting in a process crash and denial of service. The affected implementation is identified by src/gif.imageio/gif.h, GifSplitPalette(), numPixels, subPixelsA, GIFOutput, and truncated TGA input, which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1.
CVSS v3.1
Score 5.5medium
Affected software
AcademySoftwareFoundation
OpenImageIO
pkg:github/academysoftwarefoundation/OpenImageIORun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
OpenImageIO versions before 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1 contain a vulnerability in the gifsplitpalette() function within src/gif.imageio/gif.h. When handling a truncated TGA input that leaves a pending GIF frame, the calculation of numpixels multiplied by the palette partition width uses signed 32-bit arithmetic, which can overflow for large images. This overflow corrupts the subpixelsa buffer, resulting in an out-of-bounds read during GIF palette construction. The consequence is a process crash and denial of service. The issue is fixed in the stated versions.
Potential Impact
The vulnerability can cause a denial of service via a process crash when processing specially crafted truncated TGA images that trigger the overflow in gifsplitpalette(). There is no indication of confidentiality or integrity impact. The CVSS 3.1 score is 5.5 (medium), reflecting local attack vector, low complexity, no privileges required, user interaction required, unchanged scope, no confidentiality or integrity impact, and high availability impact.
Mitigation Recommendations
This issue is fixed in OpenImageIO versions 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1. Users should upgrade to one of these versions or later to remediate the vulnerability. No other mitigation or workaround is indicated.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-07-23T18:15:14.580Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aad608e55bf5e2cf5360faf
Added to database: 09/18/2026, 16:02:22 UTC
Last enriched: 09/18/2026, 16:17:19 UTC
Last updated: 09/19/2026, 03:04:21 UTC
Views: 12
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