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CVE-2026-63422

OpenImageIO OpenEXR plugin partial edge tile heap out-of-bounds write

7.8 HighFix available

OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A valid tiled openexr image whose width is not a multiple of its tile width can trigger an overflow when a caller reads a partial edge-tile rectangle. openexrinput::read_native_tiles() copies each row into the caller buffer using the padded whole-tile scanline_stride rather than user_scanline_bytes for the requested rectangle, resulting in a heap out-of-bounds write and memory corruption. The affected implementation is identified by src/openexr.imageio/exrinput.cpp, OpenEXRInput::read_native_tiles(), partial edge tile, user_scanline_bytes, and scanline_stride, which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1.

Attack profile

How easy it is to exploit

Attack vector
Local
Complexity
Low
Privileges needed
None
User interaction
Required

What an attacker can affect

Confidentiality
High
Integrity
High
Availability
High

Exploit likelihood

0.21%Up 0.1 points since Sep 19, 2026
90%50%10%1%

What each source reports

CVE List Score used 7.8

OpenImageIO OpenEXR plugin partial edge tile heap out-of-bounds write

OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A valid tiled openexr image whose width is not a multiple of its tile width can trigger an overflow when a caller reads a partial edge-tile rectangle. openexrinput::read_native_tiles() copies each row into the caller buffer using the padded whole-tile scanline_stride rather than user_scanline_bytes for the requested rectangle, resulting in a heap out-of-bounds write and memory corruption. The affected implementation is identified by src/openexr.imageio/exrinput.cpp, OpenEXRInput::read_native_tiles(), partial edge tile, user_scanline_bytes, and scanline_stride, which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1.

Record
CVE-2026-63422
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-122, CWE-787
Updated
2026-11-02
EUVDEUVD-2026-83124 7.8

OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A valid tiled openexr image whose width is not a multiple of its tile width can trigger an overflow when a caller reads a partial edge-tile rectangle. openexrinput::read_native_tiles() copies each row into the caller buffer using the padded whole-tile scanline_stride rather than user_scanline_bytes for the requested rectangle, resulting in a heap out-of-bounds write and memory corruption. The affected implementation is identified by src/openexr.imageio/exrinput.cpp, OpenEXRInput::read_native_tiles(), partial edge tile, user_scanline_bytes, and scanline_stride, which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1.

Record
EUVD-2026-83124
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
NVD 7.8

OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A valid tiled openexr image whose width is not a multiple of its tile width can trigger an overflow when a caller reads a partial edge-tile rectangle. openexrinput::read_native_tiles() copies each row into the caller buffer using the padded whole-tile scanline_stride rather than user_scanline_bytes for the requested rectangle, resulting in a heap out-of-bounds write and memory corruption. The affected implementation is identified by src/openexr.imageio/exrinput.cpp, OpenEXRInput::read_native_tiles(), partial edge tile, user_scanline_bytes, and scanline_stride, which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1.

Record
CVE-2026-63422
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-122, CWE-787
Updated
2026-11-02
OSV 7.8

OpenImageIO OpenEXR plugin partial edge tile heap out-of-bounds write

OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A valid tiled openexr image whose width is not a multiple of its tile width can trigger an overflow when a caller reads a partial edge-tile rectangle. openexrinput::read_native_tiles() copies each row into the caller buffer using the padded whole-tile scanline_stride rather than user_scanline_bytes for the requested rectangle, resulting in a heap out-of-bounds write and memory corruption. The affected implementation is identified by src/openexr.imageio/exrinput.cpp, OpenEXRInput::read_native_tiles(), partial edge tile, user_scanline_bytes, and scanline_stride, which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1.

Record
CVE-2026-63422
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Weakness
CWE-122, CWE-787
Updated
2026-11-02
OSVDEBIAN-CVE-2026-63422 7.8

OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A valid tiled openexr image whose width is not a multiple of its tile width can trigger an overflow when a caller reads a partial edge-tile rectangle. openexrinput::read_native_tiles() copies each row into the caller buffer using the padded whole-tile scanline_stride rather than user_scanline_bytes for the requested rectangle, resulting in a heap out-of-bounds write and memory corruption. The affected implementation is identified by src/openexr.imageio/exrinput.cpp, OpenEXRInput::read_native_tiles(), partial edge tile, user_scanline_bytes, and scanline_stride, which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1.

Record
DEBIAN-CVE-2026-63422
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVUBUNTU-CVE-2026-63422 7.8

OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1, A valid tiled openexr image whose width is not a multiple of its tile width can trigger an overflow when a caller reads a partial edge-tile rectangle. openexrinput::read_native_tiles() copies each row into the caller buffer using the padded whole-tile scanline_stride rather than user_scanline_bytes for the requested rectangle, resulting in a heap out-of-bounds write and memory corruption. The affected implementation is identified by src/openexr.imageio/exrinput.cpp, OpenEXRInput::read_native_tiles(), partial edge tile, user_scanline_bytes, and scanline_stride, which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.21.0, 3.1.16.0, and 3.2.0.3-beta1.

Record
UBUNTU-CVE-2026-63422
CVSS 3.1
7.8 HighCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Updated
2026-11-02
OSVopenSUSE-SU-2026:11442-1 No score

OpenImageIO-3.1.16.0-1.1 on GA media

These are all security issues fixed in the OpenImageIO-3.1.16.0-1.1 package on the GA media of openSUSE Tumbleweed.

Record
openSUSE-SU-2026:11442-1
Updated
2026-11-02

Affected products

Affected packages

Affected packages
PackageAffectedFixed
openimageio
Debian:12
All versions, plus listed versions
2.4.12.0+dfsg-12.4.13.0+dfsg-12.4.14.0+dfsg-12.4.16.0+dfsg-12.4.17.0+dfsg-1
Show 15 moreShow less
2.4.17.0+dfsg-1.12.4.7.1+dfsg-22.4.9.0+dfsg-12.5.10.1+dfsg-12.5.12.0+dfsg-12.5.12.0+dfsg-22.5.14.0+dfsg-12.5.15.0+dfsg-12.5.16.0+dfsg-12.5.18.0+dfsg-12.5.19.1+dfsg-12.5.19.1+dfsg-22.5.7.0+dfsg-13.1.18.0+dfsg-13.1.18.0+dfsg-2
None known
openimageio
Debian:13
All versions, plus listed versions
2.5.18.0+dfsg-12.5.19.1+dfsg-12.5.19.1+dfsg-23.1.18.0+dfsg-13.1.18.0+dfsg-2
None known
openimageio
Debian:14
before 3.1.18.0+dfsg-2, plus listed versions
2.5.18.0+dfsg-12.5.19.1+dfsg-12.5.19.1+dfsg-23.1.18.0+dfsg-1
3.1.18.0+dfsg-2
openimageio
Ubuntu:Pro:16.04:LTS
All versions, plus listed versions
1.5.17~dfsg0-1ubuntu21.5.20~dfsg0-1ubuntu21.5.23~dfsg0-1ubuntu11.6.9~dfsg0-4ubuntu11.6.10~dfsg0-1ubuntu11.6.10~dfsg0-2ubuntu11.6.11~dfsg0-1ubuntu11.6.11~dfsg0-1ubuntu1+esm2
None known
openimageio
Ubuntu:Pro:18.04:LTS
All versions, plus listed versions
1.6.17~dfsg0-1ubuntu51.7.17~dfsg0-1ubuntu21.7.17~dfsg0-1ubuntu2+esm1
None known
openimageio
Ubuntu:Pro:20.04:LTS
All versions, plus listed versions
2.0.10~dfsg0-12.0.11~dfsg0-12.0.12~dfsg0-12.0.12~dfsg0-1build12.0.12~dfsg0-1build2
Show 4 moreShow less
2.1.10.1~dfsg0-5ubuntu42.1.10.1~dfsg0-5ubuntu52.1.12.0~dfsg0-12.1.12.0~dfsg0-1ubuntu0.1~esm1
None known
openimageio
Ubuntu:22.04:LTS
All versions, plus listed versions
2.2.10.1+dfsg-1build12.2.18.0+dfsg-12.2.18.0+dfsg-1build22.2.18.0+dfsg-1ubuntu2
None known
openimageio
Ubuntu:Pro:24.04:LTS
All versions, plus listed versions
2.4.14.0+dfsg-12.4.16.0+dfsg-12.4.16.0+dfsg-1build12.4.17.0+dfsg-12.4.17.0+dfsg-1build12.4.17.0+dfsg-1.1build32.4.17.0+dfsg-1.1build42.4.17.0+dfsg-1.1ubuntu0.1~esm1
None known
openimageio
Ubuntu:26.10
All versions, plus listed versions
2.5.19.1+dfsg-22.5.19.1+dfsg-2build12.5.19.1+dfsg-2build2
None known
openimageio
Ubuntu:Pro:26.04:LTS
All versions, plus listed versions
2.5.18.0+dfsg-1build22.5.19.1+dfsg-1build12.5.19.1+dfsg-1build32.5.19.1+dfsg-1build52.5.19.1+dfsg-22.5.19.1+dfsg-2ubuntu0.1~esm1
None known
OpenImageIO
openSUSE:Tumbleweed
before 3.1.16.0-1.1
3.1.16.0-1.1

History

History
RecordedChangedSources
first indexedCVE List, EUVD, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-63422 is a high vulnerability (CVSS 7.8) in Academysoftwarefoundation Openimageio, published August 4, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.21%, the 10th percentile. Fixed in openimageio 3.1.18.0+dfsg-2.

References

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