CVE-2026-7102 — Tenda F456 Command Injection

title: CVE-2026-7102 - Tenda F456 WriteFacMac Command Injection
id: scw-2026-04-27-ai-1
status: experimental
level: critical
description: |
  Detects exploitation attempts against Tenda F456 devices by targeting the WriteFacMac function. The vulnerability (CVE-2026-7102) allows command injection via the 'mac' parameter in the /goform/WriteFacMac endpoint. This rule specifically looks for POST requests to this URI with a 'mac' parameter containing shell metacharacters like ';', indicating a potential command injection attempt.
author: SCW Feed Engine (AI-generated)
date: 2026-04-27
references:
  - https://shimiscyberworld.com/posts/nvd-CVE-2026-7102/
tags:
  - attack.initial_access
  - attack.t1190
logsource:
    category: webserver
detection:
  selection:
      cs-uri|contains:
          - '/goform/WriteFacMac'
      cs-method|exact:
          - 'POST'
      cs-uri-query|contains:
          - 'mac='
  selection_command_injection:
      cs-uri-query|contains:
          - ';'
      condition: selection AND selection_command_injection
falsepositives:
  - Legitimate administrative activity

Source: Shimi's Cyber World · License & reuse