Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1359 CNY

100%
Buy Us a Coffee

CVE-2026-43907— OpenImageIO: Integer overflow in QueryRGBBufferSizeInternal leads to heap out-of-bounds write in DPX decoder (kCbYCr and kABGR)

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OpenImageIO开源的一个图像处理库。具有易于使用的界面和大量受支持的图像格式。 OpenImageIO 3.0.18.0之前版本和3.1.13.0之前版本存在输入验证错误漏洞，该漏洞源于DPXColorConverter.cpp中QueryRGBBufferSizeInternal函数存在有符号整数溢出，导致堆缓冲区溢出，可能造成拒绝服务或任意代码执行。

CVSS 8.3 · High EPSS 0.46% · P38

Possible ATT&CK Techniques 1 AI

T1203 · Exploitation for Client Execution

Affected Version Matrix 2

VendorProduct Version RangeStatus
AcademySoftwareFoundation OpenImageIO < 3.0.18.0 affected
>= 3.1.4.0-beta, < 3.1.13.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-43907

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
OpenImageIO: Integer overflow in QueryRGBBufferSizeInternal leads to heap out-of-bounds write in DPX decoder (kCbYCr and kABGR)
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 3.0.18.0 and 3.1.13.0, a signed integer overflow in QueryRGBBufferSizeInternal() in DPXColorConverter.cpp leads to a heap-based out-of-bounds write when processing crafted DPX image files. The function computes buffer sizes using 32-bit signed integer arithmetic with negative multipliers (e.g., pixels * -3 * bytes for kCbYCr descriptors and pixels * -4 * bytes for kABGR descriptors), where a negative result is used as an in-band signal that no separate buffer is needed. When the pixel count is sufficiently large, the multiplication overflows INT_MIN and wraps to a small positive value. The caller in dpxinput.cpp interprets this positive value as a required buffer size, allocates an undersized heap buffer via m_decodebuf.resize(), and then writes the full image data into it via fread, resulting in a heap buffer overflow. An attacker can exploit this by crafting a DPX file that triggers the overflow, causing a denial of service (crash) or potentially arbitrary code execution through heap corruption in any application that reads pixel data using OpenImageIO. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:H/A:H
Source: CVE Program / CVE List V5
Vulnerability Type
整数溢出或超界折返
Source: CVE Program / CVE List V5
Vulnerability Title
OpenImageIO 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
OpenImageIO是OpenImageIO开源的一个图像处理库。具有易于使用的界面和大量受支持的图像格式。 OpenImageIO 3.0.18.0之前版本和3.1.13.0之前版本存在输入验证错误漏洞，该漏洞源于DPXColorConverter.cpp中QueryRGBBufferSizeInternal函数存在有符号整数溢出，导致堆缓冲区溢出，可能造成拒绝服务或任意代码执行。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
AcademySoftwareFoundation OpenImageIO < 3.0.18.0 -

II. Public POCs for CVE-2026-43907

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-43907

请登录查看更多情报信息。

Vendor Advisories for CVE-2026-43907 (1)

Same Patch Batch · AcademySoftwareFoundation · 2026-05-14 · 8 CVEs total

CVE-2026-43908 8.8 HIGH OpenImageIO: Signed integer overflow in ConvertCbYCrYToRGB leads to heap out-of-bounds wri
CVE-2026-43909 8.8 HIGH OpenImageIO: Signed integer overflow in SwapRGBABytes loop index leads to out-of-bounds re
CVE-2026-43996 5.5 MEDIUM OpenImageIO: Integer wraparound in bounds check of decode_pixel leads to out-of-bounds rea
CVE-2026-43903 OpenImageIO: SGI RLE decoder heap buffer overflow OIIO_DASSERT bounds checks are no-ops in
CVE-2026-43906 OpenImageIO: HEIF Heap overflow
CVE-2026-43904 OpenImageIO: Softimage PIC RLE decoder heap buffer overflow — longCount not clamped to ima
CVE-2026-43905 OpenImageIO: JPEG2000 (OpenJPH) signed integer overflow in buffer allocation

IV. Related Vulnerabilities

Same product: OpenImageIO
Same vendor: AcademySoftwareFoundation
Same weakness: CWE-190

V. Comments for CVE-2026-43907

No comments yet

Leave a comment