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Fencer Intel
high 8.8

CVE-2026-43908 json

OpenImageIO: Signed integer overflow in ConvertCbYCrYToRGB leads to heap out-of-bounds write in DPX 4:2:2 decoder

published 5mo ago modified 14d ago also EUVD-2026-30413

cvss
8.8
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.4%
EPSS 0.4% chance of exploitation in 30 days, percentile 31%
public exploits
0
none known

Summary

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 pixel-loop index expression i * 3 inside ConvertCbYCrYToRGB() causes the function to compute a large negative pointer offset into the output buffer, producing an out-of-bounds write that crashes the process. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0.

Patch / fix

  • openimageio openimageio 3.0.18.0, 3.1.13.0
  • openimageio Debian 14 3.1.18.0+dfsg-2

debian advisories DEBIAN-CVE-2026-43908

  • openimageio Ubuntu Pro 16.04 LTS 1.6.11~dfsg0-1ubuntu1+esm2
  • openimageio Ubuntu Pro 18.04 LTS 1.7.17~dfsg0-1ubuntu2+esm1
  • openimageio Ubuntu Pro 20.04 LTS 2.1.12.0~dfsg0-1ubuntu0.1~esm1
  • openimageio Ubuntu Pro 24.04 LTS 2.4.17.0+dfsg-1.1ubuntu0.1~esm1
  • openimageio Ubuntu Pro 26.04 LTS 2.5.19.1+dfsg-2ubuntu0.1~esm1

ubuntu advisories UBUNTU-CVE-2026-43908

Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-43908 updated cvss 6.5

OpenImageIO: OpenImageIO: Denial of Service via integer overflow

  • Red Hat All currently supported Red Hat products
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
Proof of concept is public
Automatable
no
Technical impact
total
Assessed
5mo ago

Exploit prediction

0.37% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-09).

Exploits and checks

  • github.com https://github.com/AcademySoftwareFoundation/OpenImageIO/security/advisories/GHSA-2jr5-q49v-3858 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by version score vector
CNA 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Affected products

  • AcademySoftwareFoundation OpenImageIO

Classification

Weakness

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.