Mitsubishi Electric MELSEC iQ-F Series FX5-EIP EtherNet/IP Module Improper Resource Shutdown or Release (CVE-2026-1875)

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

include('compat.inc');

if (description)
{
  script_id(505912);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/07/31");

  script_cve_id("CVE-2026-1875");

  script_name(english:"Mitsubishi Electric MELSEC iQ-F Series FX5-EIP EtherNet/IP Module Improper Resource Shutdown or Release (CVE-2026-1875)");

  script_set_attribute(attribute:"synopsis", value:
"The remote OT asset is affected by a vulnerability.");
  script_set_attribute(attribute:"description", value:
"Improper Resource Shutdown or Release vulnerability in Mitsubishi
Electric Corporation MELSEC iQ-F Series FX5-EIP EtherNet/IP Module
FX5-EIP versions 1.000 and prior allows a remote attacker to cause a
denial-of-service (DoS) condition on the products by continuously
sending UDP packets to the products. A system reset of the product is
required for recovery.

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://jvn.jp/vu/JVNVU93286687/");
  script_set_attribute(attribute:"see_also", value:"https://www.cisa.gov/news-events/ics-advisories/icsa-26-62-01");
  # https://www.mitsubishielectric.com/psirt/vulnerability/pdf/2025-021_en.pdf
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?249bfcba");
  script_set_attribute(attribute:"solution", value:
"Refer to the vendor advisory.");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-1875");
  script_cwe_id(404);

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/03/03");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/03/03");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/07/31");

  script_set_attribute(attribute:"plugin_type", value:"remote");
  script_set_attribute(attribute:"cpe", value:"cpe:/o:mitsubishielectric:melsec_iq-f_fx5-eip_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/Mitsubishi");

  exit(0);
}


include('tenable_ot_cve_funcs.inc');

get_kb_item_or_exit('Tenable.ot/Mitsubishi');

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

var vuln_cpes = {
    "cpe:/o:mitsubishielectric:melsec_iq-f_fx5-eip_firmware" :
        {"versionEndIncluding" : "1.000", "family" : "MELSECiQFCP"}
};

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