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CVE-2026-50291— OpenImageIO: Segmentation Fault in BmpInput::read_native_scanline (bmpinput.cpp:399)

Quick assessment

Affected
AcademySoftwareFoundation OpenImageIO
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

OpenImageIO 是一套用于读取、写入和处理与影视特效（VFX）/动画相关的任意图像格式的文件工具集。在版本 3.0.16.0 和 3.1.11.0 之前，通过 oiiotool 或链接了 OpenImageIO 的应用程序处理一个特制的 BMP 文件时，可能会进入位于 中的 BMP 调色板处理逻辑，而该调色板的颜色表为空。随后， 在解码 RLE 压缩的扫描线时会执行无效的调色板读取操作，从而导致进程崩溃并引发拒绝服务（DoS）。该问题已在版本 3.0.16.0 和 3.1.11.0 中修复。

CVSS 5.5 · Medium EPSS 0.01% · P3
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I. Basic Information for CVE-2026-50291

Vulnerability Information
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Vulnerability Title
OpenImageIO: Segmentation Fault in BmpInput::read_native_scanline (bmpinput.cpp:399)
Source: CVE Program / CVE List V5
Vulnerability Description
OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to versions 3.0.16.0 and 3.1.11.0, processing a crafted BMP file through oiiotool or an application linked to OpenImageIO can reach BMP palette handling in src/bmp.imageio/bmpinput.cpp with an empty color table. BmpInput::read_native_scanline then performs an invalid palette read while decoding an RLE-compressed scanline, causing a process crash and denial of service. This issue is fixed in versions 3.0.16.0 and 3.1.11.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
跨界内存读
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
AcademySoftwareFoundation OpenImageIO < 3.0.16.0 -

II. Public POCs for CVE-2026-50291

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III. Intelligence Information for CVE-2026-50291

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Patches & Fixes for CVE-2026-50291 (3)

Vendor Advisories for CVE-2026-50291 (1)

Vendor Pages for CVE-2026-50291 (2)

IV. Related Vulnerabilities

Same product: OpenImageIO
Same vendor: AcademySoftwareFoundation
Same weakness: CWE-125

V. Comments for CVE-2026-50291

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