Medium severity · published Oct 20, 2026
CVE-2026-113681
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
5.5
CVSS
0.2%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
Attack vector
Local
Complexity
Low
Privileges
None
User interaction
Required
Confidentiality
None
Integrity
None
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 6% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
OP
OpenImageIO · AcademySoftwareFoundation
before 3.0.20.0; 3.1.0.0 before 3.1.15.0; 3.2.0.0-dev before 3.2.0.3-beta1 · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-113681
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-113681
github.com
https://github.com/AcademySoftwareFoundation/OpenImageIO/blob/v3.0.19.0/src/cineon.imageio/libcineon/Codec.cpp#L79-L82
github.com
https://github.com/AcademySoftwareFoundation/OpenImageIO/commit/07e3c3e0373551c57e7d8e01353deaa4b3646613
github.com
https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/5567
github.com
https://github.com/AcademySoftwareFoundation/OpenImageIO/pull/5568
www.vulncheck.com
https://www.vulncheck.com/advisories/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
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