CVE-2026-43996 — OpenImageIO is a toolset for reading, writing, and

title: Medium - Free Tier - OpenImageIO TGA Pixel Decode Out-of-Bounds Read - CVE-2026-43996
id: scw-2026-05-14-ai-1
status: experimental
level: medium
description: |
  This rule detects the execution of OpenImageIO related processes that are attempting to exploit CVE-2026-43996. The vulnerability lies in the TGAInput::decode_pixel function where an integer overflow in unsigned 32-bit arithmetic can lead to an out-of-bounds read when processing a specially crafted TGA file. This rule specifically looks for process execution related to OpenImageIO and a command line pattern that suggests the vulnerable function is being invoked, indicating a potential exploit attempt.
author: SCW Feed Engine (AI-generated)
date: 2026-05-14
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-43996/
tags:
  - attack.execution
  - attack.t1204.002
logsource:
    category: process_creation
detection:
  selection:
      Image|contains:
          - 'openimageio'
      CommandLine|contains:
          - 'TGAInput::decode_pixel'
  condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse