Vulnerability details

CVE-2026-42450

AcademySoftwareFoundation OpenColorIO

OpenColorIO vulnerable to stack buffer overflow via unbounded `sscanf %s` in Spi3D (.spi3d) LUT parser

CVSS 4.0

8.4High

Official description

OpenColorIO is a color management framework for visual effects and animation. Prior to version 2.5.2, `FileFormatSpi3D.cpp:163` uses `sscanf` with `%s` into 64-byte stack buffers when parsing LUT data lines. Input comes from `lineBuffer[4096]`, so a crafted .spi3d file can overflow by ~4000 bytes on non-Windows. Version 2.5.2 fixes the issue.

CVSS scores

Score	Version	Source	Vector
8.4High	4.0	CVEProject cvelistV5 (CNA) (GitHub_M)	`CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`

Affected products

Vendor	Product	Versions	Source
AcademySoftwareFoundation	OpenColorIO	< 2.5.2	CVEProject cvelistV5 (CNA)

References and advisories

https://github.com/AcademySoftwareFoundation/OpenColorIO/releases/tag/v2.5.2 x_refsource_MISC
https://github.com/AcademySoftwareFoundation/OpenColorIO/security/advisories/GHSA-rxp3-rrgx-f547 x_refsource_CONFIRM

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Details

Published: 2026-06-24
Last updated: 2026-06-24
State: Published
Assigner (CNA): GitHub_M

Exploit prediction (EPSS)

0.18%

Probability of exploitation in 30 days

7.8%

Percentile (among all CVEs)

SSVC assessment (CISA)

Automatable: No
Exploitation: Proof of concept
Technical impact: Total

Weaknesses (CWE)

CWE-120
Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')