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Vulnerability details

CVE-2026-43908

AcademySoftwareFoundation OpenImageIO

OpenImageIO: Signed integer overflow in ConvertCbYCrYToRGB leads to heap out-of-bounds write in DPX 4:2:2 decoder

CVSS 3.1
8.8High

Official 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, a signed 32-bit integer overflow in the pixel-loop index expression i * 3 inside ConvertCbYCrYToRGB() causes the function to compute a large negative pointer offset into the output buffer, producing an out-of-bounds write that crashes the process. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0.

CVSS scores

ScoreVersionSourceVector
8.8High 3.1 CVEProject cvelistV5 (CNA) (GitHub_M) CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

VendorProductVersionsSource
AcademySoftwareFoundation OpenImageIO < 3.0.18.0 CVEProject cvelistV5 (CNA)
AcademySoftwareFoundation OpenImageIO >= 3.1.4.0-beta, < 3.1.13.0 CVEProject cvelistV5 (CNA)

References and advisories

1
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Details

Published
2026-05-14
Last updated
2026-05-15
State
Published
Assigner (CNA)
GitHub_M

Exploit prediction (EPSS)

0.37%
Probability of exploitation in 30 days
31.1%
Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable
No
Exploitation
Proof of concept
Technical impact
Total

Weaknesses (CWE)

  • CWE-190
    Integer Overflow or Wraparound
  • CWE-787
    Out-of-bounds Write