Security Updates for Microsoft Dynamics NAV 2018 (Oct 2026)

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

include('compat.inc');

if (description)
{
  script_id(371211);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/10/26");

  script_cve_id(
    "CVE-2026-100214",
    "CVE-2026-102226",
    "CVE-2026-105727",
    "CVE-2026-105728"
  );
  script_xref(name:"MSKB", value:"5022710");
  script_xref(name:"MSFT", value:"MS26-5022710");
  script_xref(name:"IAVA", value:"2026-A-1178");

  script_name(english:"Security Updates for Microsoft Dynamics NAV 2018 (Oct 2026)");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft Dynamics NAV install is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The Microsoft Dynamics NAV 2018 install is missing a security update. It is, therefore, affected by multiple
vulnerabilities:

  - Deserialization of untrusted data allows an authorized attacker to execute code over a network.
    (CVE-2026-100214)

  - Improper limitation of a pathname to a restricted directory ('path traversal') allows an authorized attacker
    to elevate privileges over a network. (CVE-2026-102226)

  - Improper authentication allows an unauthorized attacker to disclose information over a network.
    (CVE-2026-105728)

Note that Nessus has not attempted to exploit these issues but has instead relied only on the application's self-reported
version number.");
  # https://support.microsoft.com/en-gb/servicing/dynamics/nav/update/2022/12/cumulative-update-60-for-microsoft-dynamics-nav-2018-build-49618
  script_set_attribute(attribute:"see_also", value:"http://www.nessus.org/u?5d58129d");
  script_set_attribute(attribute:"solution", value:
"Update the Microsoft Dynamics NAV 2018 server to build 50736, or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A:C");
  script_set_cvss_temporal_vector("CVSS2#E:U/RL:OF/RC:C");
  script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H");
  script_set_cvss3_temporal_vector("CVSS:3.0/E:U/RL:O/RC:C");
  script_set_attribute(attribute:"cvss_score_source", value:"CVE-2026-105727");

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

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/10/13");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/10/13");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/10/23");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"x-cpe:/a:microsoft:dynamics_nav");
  script_set_attribute(attribute:"stig_severity", value:"I");
  script_end_attributes();

  script_category(ACT_GATHER_INFO);
  script_family(english:"Windows : Microsoft Bulletins");

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

  script_dependencies("microsoft_dynamics_nav_server_win_installed.nbin");
  script_require_keys("installed_sw/Microsoft Dynamics NAV Server");
  script_require_ports(139, 445);

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'checks': [
    {
      'product': {'name': 'Microsoft Dynamics NAV Server', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'min_version': '11.0', 'fixed_version': '11.0.50736.0'}
      ]
    }
  ]
};

var result = vdf::check_and_report(vuln_data:vuln_data, severity:SECURITY_HOLE);
vdf::handle_check_and_report_errors(vdf_result:result);