CVE-2026-43996: CWE-125: Out-of-bounds Read in AcademySoftwareFoundation OpenImageIO
CVE-2026-43996 is an out-of-bounds read vulnerability in the AcademySoftwareFoundation's OpenImageIO library affecting certain versions prior to 3.0.18.0 and between 3.1.4.0-beta and 3.1.13.0.
AI Analysis
Technical Summary
OpenImageIO versions prior to 3.0.18.0 and between 3.1.4.0-beta and 3.1.13.0 contain a vulnerability in the TGAInput::decode_pixel function where the bounds check uses unsigned 32-bit arithmetic for k + palbytespp. When k is 0xFFFFFFFC and palbytespp is 4, the addition wraps to 0, passing the bounds check incorrectly. The subsequent palette access uses the unwrapped k value (0xFFFFFFFC) as an index, resulting in an out-of-bounds read approximately 4 GB past the palette buffer, causing a segmentation fault (SEGV). This is classified as CWE-125 (Out-of-bounds Read). The vulnerability is fixed in OpenImageIO versions 3.0.18.0 and 3.1.13.0.
Potential Impact
The vulnerability causes an out-of-bounds read leading to a segmentation fault, impacting the availability of the affected software. There is no impact on confidentiality or integrity according to the CVSS vector. No known exploits are reported in the wild.
Mitigation Recommendations
A fix is available in OpenImageIO versions 3.0.18.0 and 3.1.13.0. Users should upgrade to these or later versions to remediate the vulnerability. Patch status is confirmed by the vendor advisory indicating the issue is fixed in these versions.
CVE-2026-43996: CWE-125: Out-of-bounds Read in AcademySoftwareFoundation OpenImageIO
Description
CVE-2026-43996 is an out-of-bounds read vulnerability in the AcademySoftwareFoundation's OpenImageIO library affecting certain versions prior to 3.0.18.0 and between 3.1.4.0-beta and 3.1.13.0.
CVSS v3.1
Score 5.5medium
Affected software
pkg:github/academysoftwarefoundation/OpenImageIORun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
OpenImageIO versions prior to 3.0.18.0 and between 3.1.4.0-beta and 3.1.13.0 contain a vulnerability in the TGAInput::decode_pixel function where the bounds check uses unsigned 32-bit arithmetic for k + palbytespp. When k is 0xFFFFFFFC and palbytespp is 4, the addition wraps to 0, passing the bounds check incorrectly. The subsequent palette access uses the unwrapped k value (0xFFFFFFFC) as an index, resulting in an out-of-bounds read approximately 4 GB past the palette buffer, causing a segmentation fault (SEGV). This is classified as CWE-125 (Out-of-bounds Read). The vulnerability is fixed in OpenImageIO versions 3.0.18.0 and 3.1.13.0.
Potential Impact
The vulnerability causes an out-of-bounds read leading to a segmentation fault, impacting the availability of the affected software. There is no impact on confidentiality or integrity according to the CVSS vector. No known exploits are reported in the wild.
Mitigation Recommendations
A fix is available in OpenImageIO versions 3.0.18.0 and 3.1.13.0. Users should upgrade to these or later versions to remediate the vulnerability. Patch status is confirmed by the vendor advisory indicating the issue is fixed in these versions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-05-04T20:24:31.917Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a06248cec166c07b00b4c69
Added to database: 05/14/2026, 19:37:48 UTC
Last enriched: 05/22/2026, 15:32:27 UTC
Last updated: 07/31/2026, 19:22:59 UTC
Views: 75
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