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VulnerabilityPublished

CVE-2026-59181: AcademySoftwareFoundation OpenImageIO · Stack-based Buffer Overflow

Affects AcademySoftwareFoundation OpenImageIOSource CVE Database V5

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Not known to be exploited · CVSS 6.1 Medium · fixed in 3.2.0.3-beta1 : update AcademySoftwareFoundation OpenImageIO when convenient.

Data as of 2 Nov 2026, 10:58 UTC

CVSS 3.1 base score
6.1Medium
How severe the flaw is on the 0–10 CVSS scale.
EPSS
0.2% chance of exploitation in 30 days – higher than 10% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch
Available – fixed in 3.2.0.3-beta1, 3.1.15.0, 3.0.20.0
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:H

Exploitation evidence

  1. Disclosed: evidence found.

    CVE published 18 Sep 2026

  2. Detectable: no evidence on record.

    No public nuclei template indexed

  3. Weaponized: no evidence on record.

    No public exploit code indexed in Metasploit or Exploit-DB

  4. Exploited in the wild: no evidence on record.

    Not in CISA KEV and no source reports exploitation

  5. Observed by OffSeq Mirage: no evidence on record.

    No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2 Nov 2026.

What to do

Upgrade OpenImageIO and academysoftwarefoundation/OpenImageIO to 3.2.0.3-beta1, 3.1.15.0 or 3.0.20.0.

Affected software

ProductAffectedFixed in
AcademySoftwareFoundationOpenImageIOAffected
  • >=3.2.0.0-dev <3.2.0.3-beta1
Fixed in
  • 3.2.0.3-beta1
AcademySoftwareFoundationOpenImageIOAffected
  • >=3.1.0.0 <3.1.15.0
Fixed in
  • 3.1.15.0
AcademySoftwareFoundationOpenImageIOAffected
  • <3.0.20.0
Fixed in
  • 3.0.20.0
GitHubacademysoftwarefoundation/OpenImageIOpkg:github/academysoftwarefoundation/OpenImageIOOther threatsAffected
  • <3.0.20.0
  • >=3.1.0.0 <3.1.15.0
  • >=3.2.0.0-dev <3.2.0.3-beta1
Fixed in
  • 3.0.20.0
  • 3.1.15.0
  • 3.2.0.3-beta1

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

Upgrade OpenImageIO to version 3.0.20.0, 3.1.15.0, or 3.2.0.3-beta1 or later, where this vulnerability has been fixed. No other mitigation guidance is provided or required.

Description

OpenImageIO is a toolset for reading, writing, and manipulating image files of any image file format relevant to VFX / animation. Prior to 3.0.20.0, 3.1.15.0, and 3.2.0.3-beta1, A crafted cineon file can supply a numberofelements value greater than the format maximum of eight. cineoninput::open() uses that unchecked value as the loop bound while filling the fixed strings[8] array, writing pointers beyond the stack buffer and into adjacent state, resulting in memory corruption and denial of service. The affected implementation is identified by src/cineon.imageio/cineoninput.cpp, CineonInput::open(), numberOfElements, and strings[8], which define the relevant source path, functions, state, and trigger. This issue is fixed in versions 3.0.20.0, 3.1.15.0, and 3.2.0.3-beta1.

References

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