CVE-2026-8261 — The Function SQFunctionProto::Load Of The File Squirrel/Sqob Buffer Overflow

title: Local Heap Buffer Overflow via SQFunctionProto::Load - CVE-2026-8261
id: scw-2026-05-11-ai-1
status: experimental
level: high
description: |
  Detects the execution of Squirrel related processes with command lines that suggest an attempt to exploit the SQFunctionProto::Load vulnerability (CVE-2026-8261) leading to a heap-based buffer overflow. This rule is specific to the identified function and file path associated with the vulnerability.
author: SCW Feed Engine (AI-generated)
date: 2026-05-11
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-8261/
tags:
  - attack.initial_access
  - attack.t1190
logsource:
    category: process_creation
detection:
  selection:
      Image|startswith:
          - 'C:\\Program Files\\'
          - '/usr/local/bin/'
      CommandLine|contains:
          - 'squirrel.exe'
          - 'sqobject.cpp'
      condition: selection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse