Siemens SICAM Q100/Q200 Cleartext Storage of Sensitive Information (CVE-2025-40753)

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

include('compat.inc');

if (description)
{
  script_id(504805);
  script_version("1.3");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/03/12");

  script_cve_id("CVE-2025-40753");
  script_xref(name:"ICSA", value:"25-226-16");

  script_name(english:"Siemens SICAM Q100/Q200 Cleartext Storage of Sensitive Information (CVE-2025-40753)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"Affected devices export the password for the SMTP account as plain
text in the Configuration File. This could allow an authenticated
local attacker to extract it and use the configured SMTP service for
arbitrary purposes.

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-portal.siemens.com/productcert/html/ssa-529291.html");
  script_set_attribute(attribute:"see_also", value:"https://www.cisa.gov/news-events/ics-advisories/icsa-25-226-16");
  script_set_attribute(attribute:"see_also", value:"https://support.industry.siemens.com/cs/ww/en/view/109743592/");
  script_set_attribute(attribute:"see_also", value:"https://support.industry.siemens.com/cs/ww/en/view/109743524/");
  script_set_attribute(attribute:"solution", value:
"The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original
can be found at CISA.gov.

Siemens has identified the following specific workarounds and mitigations users can apply to reduce risk:

- POWER METER SICAM Q100 (7KG9501-0AA01-0AA1), POWER METER SICAM Q100 (7KG9501-0AA01-2AA1), POWER METER SICAM Q100
(7KG9501-0AA31-0AA1), POWER METER SICAM Q100 (7KG9501-0AA31-2AA1): Update to V2.62 or later version
- POWER METER SICAM Q200 family: Update to V2.80 or later version

As a general security measure, Siemens recommends protecting network access to devices with appropriate mechanisms. To
operate the devices in a protected IT environment, Siemens recommends configuring the environment according to Siemens'
operational guidelines for industrial security and following recommendations in the product manuals.

Additional information on industrial security by Siemens can be found on the Siemens industrial security webpage

For more information see the associated Siemens security advisory SSA-529291 in HTML and CSAF.");
  script_set_cvss_base_vector("CVSS2#AV:L/AC:L/Au:N/C:C/I:N/A:N");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss4_vector", value:"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-40753");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(312);

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/08/12");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/08/12");
  script_set_attribute(attribute:"plugin_publication_date", value:"2025/11/18");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:power_meter_sicam_q100_firmware:2.62");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:siemens:power_meter_sicam_q200_series_firmware");
  script_set_attribute(attribute:"generated_plugin", value:"former");
  script_end_attributes();

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

  script_copyright(english:"This script is Copyright (C) 2025-2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/Siemens');

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

var vuln_cpes = {
    "cpe:/o:siemens:power_meter_sicam_q100_firmware:2.62" :
        {"versionEndExcluding" : "2.62", "versionStartIncluding" : "2.60", "family" : "SicamQ100", "orderNumbers" : ['7KG9501-0AA01-0AA1', '7KG9501-0AA31-2AA1', '7KG9501-0AA31-0AA1', '7KG9501-0AA01-2AA1']},
    "cpe:/o:siemens:power_meter_sicam_q200_series_firmware" :
        {"versionEndExcluding" : "2.80", "versionStartIncluding" : "2.70", "family" : "SicamQ200"}
};

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