Danfoss AK-SM800A Command Injection (CVE-2025-41451)

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

include('compat.inc');

if (description)
{
  script_id(506212);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/14");

  script_cve_id("CVE-2025-41451");
  script_xref(name:"ICSA", value:"25-140-03");

  script_name(english:"Danfoss AK-SM800A Command Injection (CVE-2025-41451)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"Improper neutralization of alarm-to-mail configuration fields used in
an OS shell Command ('Command Injection') in Danfoss AK-SM8xxA Series
prior to version 4.3.1, leading to a potential post-authenticated
remote code execution on an attacked system.

This plugin only works with Tenable.ot.
Please visit https://www.tenable.com/products/tenable-ot for more information.");
  # https://www.danfoss.com/en/service-and-support/coordinated-vulnerability-disclosure/danfoss-security-advisories/dsa-2025-08-01/
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?d7f2c8ce");
  script_set_attribute(attribute:"see_also", value:"https://www.cisa.gov/news-events/ics-advisories/icsa-25-140-03");
  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.

Danfoss created release R4.2 to address CVE-2025-41450 and release R4.3.1 to address CVE-2025-41451 and CVE-2025-41452.
Users can obtain and install the latest version by following the AK-SM 800A Software Upgrade Process.
For more information, see the Danfoss security advisories.");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H");
  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:N/AC:H/AT:P/PR:H/UI:A/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H");
  script_set_attribute(attribute:"cvss4_threat_vector", value:"CVSS:4.0/E:U");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2025-41451");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(77);

  script_set_attribute(attribute:"vuln_publication_date", value:"2025/08/01");
  script_set_attribute(attribute:"patch_publication_date", value:"2025/08/01");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/13");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:danfoss:ak-sm_800a_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) 2026 and is owned by Tenable, Inc. or an Affiliate thereof.");

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

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/Danfoss');

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

var vuln_cpes = {
    "cpe:/o:danfoss:ak-sm_800a_firmware" :
        {"versionEndExcluding" : "4.3.1", "family" : "AKSM800A"}
};

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