CVE-2026-67549: OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant

Q: How do I fix CVE-2026-67549?

openimageio: upgrade to 3.1.16.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-67549 being exploited?

CVE-2026-67549 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-67549 affect?

CVE-2026-67549 affects openimageio. Severity is high (CVSS 7.6). OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.1.16.0, A crafted 1-bit contiguous cmyk tiff is exposed through a native uint1 imagespec, so caller

Q: How urgent is CVE-2026-67549?

Priority 37/100. High severity; Public exploit reference

Routine

HIGH 7.6UPGRADE

CVE-2026-67549 is a high-severity flaw (CVSS 7.6) affecting openimageio. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.1.16.0, A crafted 1-bit contiguous cmyk tiff is exposed through a native uint1 imagespec, so callers allocate a bit-packed buffer. tiffinput::read_native_scanline_locked() nevertheless invokes tiffinput::bit_convert() with 8-bit output and writes one expanded byte per value into that smaller buffer, resultin

Why this priority

High severity
Public exploit reference

A fixed release or distro patch exists.

Risk facts

CVSS score	7.6 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 79%)
CISA exploited list	No
Weakness	CWE-122, CWE-131, CWE-787
Published	2026-09-18
Last modified	2026-09-29

Publisher (CNA): GitHub, Inc. · Vendor: openimageio

Last updated 2026-09-29 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-09-18 16:17 UTCPublished CVE record published
2026-09-29 18:55 UTCUpdated Record last modified

openimageio openimageio UPGRADE

Affected: < 3.1.16.0

Fixed in: 3.1.16.0

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy openimageio || rpm -q openimageio || openimageio --version

2. UPGRADE to 3.1.16.0 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade openimageio

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade openimageio

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-67549?

openimageio: upgrade to 3.1.16.0. Exact commands for each OS are on this page.

Is CVE-2026-67549 being exploited?

CVE-2026-67549 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-67549 affect?

CVE-2026-67549 affects openimageio. Severity is high (CVSS 7.6). OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.1.16.0, A crafted 1-bit contiguous cmyk tiff is exposed through a native uint1 imagespec, so caller

How urgent is CVE-2026-67549?

Priority 37/100. High severity; Public exploit reference

Related CVEs

CVE-2026-43908 HIGH 8.8 UPGRADE OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant
CVE-2026-43909 HIGH 8.8 UPGRADE OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant
CVE-2026-43904 HIGH 7.8 UPGRADE OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant
CVE-2026-43905 HIGH 7.8 UPGRADE OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant
CVE-2026-43906 HIGH 7.8 UPGRADE OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant

References

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