AcademySoftwareFoundation OpenImageIO up to 3.0.18.0/3.1.13.0 DPX Image SwapRGBABytes out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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7.4$0-$5k0.00

Summaryinfo

A vulnerability was found in AcademySoftwareFoundation OpenImageIO up to 3.0.18.0/3.1.13.0. It has been rated as critical. Affected by this vulnerability is the function SwapRGBABytes of the component DPX Image Handler. This manipulation causes out-of-bounds. The identification of this vulnerability is CVE-2026-43909. It is possible to initiate the attack remotely. There is no exploit available. Upgrading the affected component is advised.

Detailsinfo

A vulnerability classified as critical was found in AcademySoftwareFoundation OpenImageIO up to 3.0.18.0/3.1.13.0. Affected by this vulnerability is the function SwapRGBABytes of the component DPX Image Handler. The manipulation with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

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 loop index expression i * 4 inside SwapRGBABytes() causes the function to compute a large negative pointer offset when processing kABGR DPX images with large dimensions. The immediate crash is an out-of-bounds read (the memcpy at line 45 reads from &input[i * 4] first), but the subsequent write operations at lines 46–49 target the same wrapped offset — making this a combined OOB read+write primitive. This vulnerability is fixed in 3.0.18.0 and 3.1.13.0.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2026-43909 since 05/04/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. It demands that the victim is doing some kind of user interaction. Technical details of the vulnerability are known, but there is no available exploit.

The vulnerability scanner Nessus provides a plugin with the ID 321364 (Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 24.04 LTS / 26.04 LTS : OpenImageIO vulnerabilities (USN-8438-1)), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 3.0.18.0 or 3.1.13.0 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Tenable (321364). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

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CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 7.6
VulDB Meta Temp Score: 7.4

VulDB Base Score: 6.3
VulDB Temp Score: 6.0
VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA Base Score: 8.8
CNA Vector (GitHub_M): 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 321364
Nessus Name: Ubuntu 16.04 LTS / 18.04 LTS / 20.04 LTS / 24.04 LTS / 26.04 LTS : OpenImageIO vulnerabilities (USN-8438-1)

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: OpenImageIO 3.0.18.0/3.1.13.0

Timelineinfo

05/04/2026 CVE reserved
05/15/2026 +11 days Advisory disclosed
05/15/2026 +0 days VulDB entry created
06/19/2026 +35 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-g267-j53j-5258
Status: Confirmed

CVE: CVE-2026-43909 (🔒)
GCVE (CVE): GCVE-0-2026-43909
GCVE (VulDB): GCVE-100-363979

Entryinfo

Created: 05/15/2026 04:11
Updated: 06/19/2026 19:26
Changes: 05/15/2026 04:11 (66), 06/19/2026 19:26 (2)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

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