Security Updates for Microsoft Dynamics 365 (on-premises) (August 2026)

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

include('compat.inc');

if (description)
{
  script_id(335415);
  script_version("1.1");
  script_set_attribute(attribute:"plugin_modification_date", value:"2026/08/14");

  script_cve_id("CVE-2026-65815","CVE-2026-66301");
  script_xref(name:"MSKB", value:"5121006");
  script_xref(name:"MSFT", value:"MS26-5121006");
  script_xref(name:"IAVA", value:"2026-A-0841");

  script_name(english:"Security Updates for Microsoft Dynamics 365 (on-premises) (August 2026)");

  script_set_attribute(attribute:"synopsis", value:
"The Microsoft Dynamics 365 (on-premises) is affected by multiple vulnerabilities.");
  script_set_attribute(attribute:"description", value:
"The Microsoft Dynamics 365 (on-premises) is missing security updates. It is,therefore, affected by the following
vulnerabilities:

  - Deserialization of untrusted data in Microsoft Dynamics 365 (on-premises) allows an authorized attacker to
    execute code over a network. (CVE-2026-65815)

  - Exposure of sensitive information to an unauthorized actor in Microsoft Dynamics 365 (on-premises) allows
    an authorized attacker to disclose information over a network. (CVE-2026-66301)

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://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65815");
  script_set_attribute(attribute:"see_also", value:"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-66301");
  script_set_attribute(attribute:"solution", value:
"Microsoft has released a security update, please review the vendor advisory.");
  script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:S/C:C/I:C/A: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_attribute(attribute:"cvss_score_source", value:"CVE-2026-65815");
  script_cwe_id(200, 502);

  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_detect.nbin");
  script_require_keys("installed_sw/Microsoft Dynamics 365 Server");
  script_require_ports(139, 445);

  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 Server', 'type': 'app'},
      'check_algorithm': 'default',
      'constraints': [
        {'min_version': '9.1', 'fixed_version': '9.1.0047.0006', 'fixed_display': 'Update v9.1 (on-premises) Update 1.47'}
      ]
    }
  ]
};

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