AC Smart II - Authentication Bypass

id: CVE-2025-10204

info:
  name: AC Smart II - Authentication Bypass
  author: theeldruin
  severity: high
  description: |
    AC Smart II contains an authentication bypass caused by a hidden password reset form that can be manipulated to change the administrator password without verifying login or permissions, letting attackers change admin passwords without authorization.
  impact: |
    Attackers can change the administrator password without authorization, leading to full system takeover.
  remediation: |
    Update to the latest version that properly verifies login status and user permissions before password reset.
  reference:
    - https://www.notion.so/eldruin/Unauthenticated-Administrator-Password-Reset-AC-Smart-II-v2-1-9-Rev-2251-24d27474cccb80a68e47f907b94abed9
    - https://nvd.nist.gov/vuln/detail/CVE-2025-10204
  classification:
    cwe-id: CWE-306
  metadata:
    verified: true
    max-request: 1
    shodan-query: html:"Doc/WebLogin.asp"
    fofa-query: body="Doc/WebLogin.asp"
  tags: cve,cve2025,unauth,auth-bypass,vkev

http:
  - raw:
      - |
        GET /Doc/WebLogin.asp HTTP/1.1
        Host: {{Hostname}}

    matchers:
      - type: dsl
        dsl:
          - 'contains_all(body, "div id=\"div_admin_pwd\" style=\"position:absolute;top:180px;left:50%;width:411px;height:228px;margin:0 0 0 -235px ;z-index:1; visibility: hidden;","AC Smart")'
          - 'status_code == 200'
        condition: and
# digest: 4a0a00473045022038f7ecd4c36ff8da54a3ffaf615bde58bd931795dbedf6476a17ad57ac67bf6a022100a58d155d192055c55488354afe21ea10fb1bd3b2edc975af92cafae7366edafc:922c64590222798bb761d5b6d8e72950