Security Updates for Microsoft Dynamics 365 Business Central (August 2026)

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

include('compat.inc');

if (description)
{
  script_id(335416);
  script_version("1.2");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/17");

  script_cve_id("CVE-2026-40375");
  script_xref(name:"MSKB", value:"5100263");
  script_xref(name:"MSKB", value:"5100265");
  script_xref(name:"MSKB", value:"5100266");
  script_xref(name:"MSFT", value:"MS26-5100263");
  script_xref(name:"MSFT", value:"MS26-5100265");
  script_xref(name:"MSFT", value:"MS26-5100266");
  script_xref(name:"IAVA", value:"2026-A-0841");

  script_name(english:"Security Updates for Microsoft Dynamics 365 Business Central (August 2026)");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft Dynamics 365 Business Central install is missing a security update.");
  script_set_attribute(attribute:"description", value:
"The Microsoft Dynamics 365 Business Central install is missing a security update. It is, therefore, affected by an
information disclosure vulnerability due to missing authorization. An authenticated, remote attacker can exploit this, to
disclose potentially sensitive information.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
  script_set_attribute(attribute:"see_also", value:"https://support.microsoft.com/help/5100263");
  script_set_attribute(attribute:"see_also", value:"https://support.microsoft.com/help/5100265");
  script_set_attribute(attribute:"see_also", value:"https://support.microsoft.com/help/5100266");
  script_set_attribute(attribute:"solution", value:
"Update Microsoft Dynamics 365 Business Central to Update 26.14 for 2025 Release Wave 1, Update 27.8 for 2025 Release
Wave 2, Update 28.2 for 2026 Release Wave 1, or later.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/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:N/AC:L/PR:L/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:"cvss_score_source", value:"CVE-2026-40375");

  script_set_attribute(attribute:"exploitability_ease", value:"No known exploits are available");
  script_set_attribute(attribute:"exploit_available", value:"false");
  script_cwe_id(862);

  script_set_attribute(attribute:"vuln_publication_date", value:"2026/08/11");
  script_set_attribute(attribute:"patch_publication_date", value:"2026/08/11");
  script_set_attribute(attribute:"plugin_publication_date", value:"2026/08/14");

  script_set_attribute(attribute:"plugin_type", value:"local");
  script_set_attribute(attribute:"cpe", value:"cpe:/a:microsoft:dynamics_365");
  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_365_business_central_server_win_installed.nbin");
  script_require_keys("installed_sw/Microsoft Dynamics 365 Business Central Server");

  exit(0);
}

include('vdf.inc');

# @tvdl-content
var vuln_data = {
  'metadata': {'spec_version': '1.0'},
  'requires': [{'scope': 'target', 'match': {'os': 'windows'}}],
  'checks': [
    {
      'product': {'name': 'Microsoft Dynamics 365 Business Central Server', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'min_version': '25', 'fixed_version': '26', 'fixed_display': 'See Vendor Advisory'},
        {'min_version': '26', 'fixed_version': '26.0.50788', 'fixed_display': 'Update 26.14 for Microsoft Dynamics 365 Business Central 2025 Release Wave 1'},
        {'min_version': '27', 'fixed_version': '27.0.50789', 'fixed_display': 'Update 27.8 for Microsoft Dynamics 365 Business Central 2025 Release Wave 2'},
        {'min_version': '28', 'fixed_version': '28.0.50938', 'fixed_display': 'Update 28.2 for Microsoft Dynamics 365 Business Central 2026 Release Wave 1'}
      ]
    }
  ]
};

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