Edimax BR-6478AC Buffer Overflow: Remote Exploit Publicly Available

title: CVE-2026-10164 - Edimax BR-6478AC formUSBFolder Buffer Overflow
id: scw-2026-05-31-ai-1
status: experimental
level: critical
description: |
  This rule detects attempts to exploit CVE-2026-10164, a buffer overflow vulnerability in the Edimax BR-6478AC router. The exploit targets the formUSBFolder function via a POST request to /goform/formUSBFolder, manipulating the ShareName or SelectName parameters with overly long values to trigger the overflow. The presence of 'ShareName=' or 'SelectName=' in the URI query, combined with a large string input, is a strong indicator of this specific exploit.
author: SCW Feed Engine (AI-generated)
date: 2026-05-31
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-10164/
tags:
  - attack.initial_access
  - attack.t1190
logsource:
    category: webserver
detection:
  selection:
      cs-method:
          - 'POST'
      uri|contains:
          - '/goform/formUSBFolder'
      cs-uri-query|contains:
          - 'ShareName='
          - 'SelectName='
  selection_overflow:
      cs-uri-query|contains:
          - 'ShareName=' + 'A'*1000
          - 'SelectName=' + 'A'*1000
  condition: selection AND selection_overflow
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse