Wago PFC100/PFC200 OS Command Injection (CVE-2020-12522)

#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
##

include('compat.inc');

if (description)
{
  script_id(500920);
  script_version("1.4");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/07");

  script_cve_id("CVE-2020-12522");

  script_name(english:"Wago PFC100/PFC200 OS Command Injection (CVE-2020-12522)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"The reported vulnerability allows an attacker who has network access
to the device to execute code with specially crafted packets in WAGO
Series PFC 100 (750-81xx/xxx-xxx), Series PFC 200 (750-82xx/xxx-xxx),
Series Wago Touch Panel 600 Standard Line (762-4xxx), Series Wago
Touch Panel 600 Advanced Line (762-5xxx), Series Wago Touch Panel 600
Marine Line (762-6xxx) with firmware versions <=FW10.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.");
  script_set_attribute(attribute:"see_also", value:"https://cert.vde.com/en-us/advisories/vde-2020-045");
  script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2020-12522");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_cwe_id(78);

  script_set_attribute(attribute:"vuln_publication_date", value:"2020/12/17");
  script_set_attribute(attribute:"patch_publication_date", value:"2020/12/17");
  script_set_attribute(attribute:"plugin_publication_date", value:"2023/03/29");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:wago:pfc_100_firmware");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:wago:pfc_200_firmware");
  script_set_attribute(attribute:"generated_plugin", value:"current");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Tenable.ot");

  script_copyright(english:"This script is Copyright (C) 2023-2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

  script_dependencies("tenable_ot_api_integration.nasl");
  script_require_keys("Tenable.ot/Wago");

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/Wago');

var asset = tenable_ot::assets::get(vendor:'Wago');

var vuln_cpes = {
    "cpe:/o:wago:pfc_100_firmware" :
        {"versionEndIncluding" : "10", "family" : "ControllerPFC100"},
    "cpe:/o:wago:pfc_200_firmware" :
        {"versionEndIncluding" : "10", "family" : "ControllerPFC200"}
};

tenable_ot::cve::compare_and_report(asset:asset, cpes:vuln_cpes, severity:SECURITY_HOLE);