Description
OpenImageIO before 3.0.20.0, 3.1.x before 3.1.15.0, and 3.2.x before 3.2.0.3-beta1 contains an integer overflow in cineon::Codec::Read that undersizes the scanline buffer, causing a heap out-of-bounds read. Attackers can supply a crafted Cineon file with a huge declared width that wraps the size calculation to zero, so UnPackPacked reads past a 4-byte buffer and crashes the application.
Published: 2026-10-20
Score: 6.8 Medium
EPSS: n/a
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Tue, 20 Oct 2026 18:45:00 +0000

Type Values Removed Values Added
First Time appeared Academysoftwarefoundation
Academysoftwarefoundation openimageio
Vendors & Products Academysoftwarefoundation
Academysoftwarefoundation openimageio

Tue, 20 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 20 Oct 2026 15:45:00 +0000

Type Values Removed Values Added
Description OpenImageIO before 3.0.20.0, 3.1.x before 3.1.15.0, and 3.2.x before 3.2.0.3-beta1 contains an integer overflow in cineon::Codec::Read that undersizes the scanline buffer, causing a heap out-of-bounds read. Attackers can supply a crafted Cineon file with a huge declared width that wraps the size calculation to zero, so UnPackPacked reads past a 4-byte buffer and crashes the application.
Title OpenImageIO before 3.0.20.0, 3.1.x before 3.1.15.0, and 3.2.x before 3.2.0.3-beta1 Cineon Reader Heap Out-of-Bounds Read
First Time appeared Openimageio
Openimageio openimageio
Weaknesses CWE-190
CPEs cpe:2.3:a:openimageio:openimageio:*:*:*:*:*:*:*:*
Vendors & Products Openimageio
Openimageio openimageio
References
Metrics cvssV3_1

{'score': 5.5, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'}

cvssV4_0

{'score': 6.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


Subscriptions

Academysoftwarefoundation Openimageio
Openimageio Openimageio
cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-10-20T16:21:37.806Z

Reserved: 2026-10-20T14:51:02.489Z

Link: CVE-2026-113681

cve-icon Vulnrichment

Updated: 2026-10-20T16:21:33.181Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-20T16:17:13.060

Modified: 2026-10-20T20:06:37.150

Link: CVE-2026-113681

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-20T18:30:16Z

Weaknesses
  • CWE-190

    Integer Overflow or Wraparound