CVE-2026-43909— OpenImageIO: Signed integer overflow in SwapRGBABytes loop index leads to out-of-bounds read/write in DPX ABGR decoder
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I. Basic Information for CVE-2026-43909
Vulnerability Information
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Vulnerability Title
OpenImageIO: Signed integer overflow in SwapRGBABytes loop index leads to out-of-bounds read/write in DPX ABGR decoder
Source: NVD (National Vulnerability Database)
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 32-bit integer overflow in the loop index expression i * 4 inside SwapRGBABytes() causes the function to compute a large negative pointer offset when processing kABGR DPX images with large dimensions. The immediate crash is an out-of-bounds read (the memcpy at line 45 reads from &input[i * 4] first), but the subsequent write operations at lines 46–49 target the same wrapped offset — making this a combined OOB read+write primitive. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存读
Source: NVD (National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| AcademySoftwareFoundation | OpenImageIO | < 3.0.18.0 | - |
II. Public POCs for CVE-2026-43909
| # | POC Description | Source Link | Shenlong Link |
|---|
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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-2026-43907 | 8.3 HIGH | OpenImageIO: Integer overflow in QueryRGBBufferSizeInternal leads to heap out-of-bounds wr |
| 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
- CVE-2026-43903
OpenImageIO: SGI RLE decoder heap buffer overflow OIIO_DASSE - CVE-2026-43904
OpenImageIO: Softimage PIC RLE decoder heap buffer overflow - CVE-2026-43905
OpenImageIO: JPEG2000 (OpenJPH) signed integer overflow in b - CVE-2026-43996
OpenImageIO: Integer wraparound in bounds check of decode_pi - CVE-2026-43907
OpenImageIO: Integer overflow in QueryRGBBufferSizeInternal
Same vendor: AcademySoftwareFoundation
- CVE-2026-43903
OpenImageIO: SGI RLE decoder heap buffer overflow OIIO_DASSE - CVE-2026-43904
OpenImageIO: Softimage PIC RLE decoder heap buffer overflow - CVE-2026-43905
OpenImageIO: JPEG2000 (OpenJPH) signed integer overflow in b - CVE-2026-43996
OpenImageIO: Integer wraparound in bounds check of decode_pi - CVE-2026-43907
OpenImageIO: Integer overflow in QueryRGBBufferSizeInternal
V. Comments for CVE-2026-43909
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